intra subnets shouldn't determine number of nat gateways

"The module does not take into account the number of intra_subnets, since the latter are designed to have no Internet access via NAT Gateway."

### [5.1.1](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v5.1.0...v5.1.1) (2023-07-25)

### Bug Fixes

* Ensure database route table output works ([#926](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/926)) ([e4c48d46](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/e4c48d4675718d5bd8c72c6b934c70c0f4bf1670)), closes [#857](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/857)

* fix: ensure database route table output works

On initial plan the `database_route_table_ids` output is not
available due to the values not being known until after apply.
Switching the logic to test the length of the array fixes this
issue. Credit to @martin566 for discovering the solution.

fixes #857

* Update outputs.tf

* Update outputs.tf

---------
Co-authored-by: Bryant Biggs <bryantbiggs@gmail.com>

## [5.1.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v5.0.0...v5.1.0) (2023-07-15)

### Features

* Add support for creating a security group for VPC endpoint(s) ([#962](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/962)) ([802d5f14](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/802d5f14c29db4e50b3f2aaf87950845594a31bd))

## [5.0.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v4.0.2...v5.0.0) (2023-05-30)

### ⚠ BREAKING CHANGES

* Bump Terraform AWS Provider version to 5.0 (#941)

### Features

* Bump Terraform AWS Provider version to 5.0 ([#941](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/941)) ([2517eb98](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/2517eb98a39500897feecd27178994055ee2eb5e))

Co-authored-by: Anton Babenko <anton@antonbabenko.com>
Co-authored-by: Bryant Biggs <bryantbiggs@gmail.com>

### [4.0.2](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v4.0.1...v4.0.2) (2023-05-15)

### Bug Fixes

* Add dns64 routes ([#924](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/924)) ([743798da](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/743798daa14b8a5b827b37053ca7e3c5b8865c06))

### [4.0.1](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v4.0.0...v4.0.1) (2023-04-07)

### Bug Fixes

* Add missing private subnets to max subnet length local ([#920](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/920)) ([6f51f34d](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/6f51f34d9c91d62984ff985aad6b5ef03eb2a75a))

## [4.0.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.19.0...v4.0.0) (2023-04-07)

### ⚠ BREAKING CHANGES

* Support enabling NAU metrics in "aws_vpc" resource (#838)

### Features

* Support enabling NAU metrics in "aws_vpc" resource ([#838](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/838)) ([44e6eaa1](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/44e6eaa154a9e78c8d6e86d1c735f95825b270db))

Co-authored-by: Tomasz Charewicz <tomasz.charewicz@ringieraxelspringer.pl>
Co-authored-by: Anton Babenko <anton@antonbabenko.com>
Co-authored-by: Bryant Biggs <bryantbiggs@gmail.com>

## [3.19.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.18.1...v3.19.0) (2023-01-13)

### Features

* Add public and private tags per az ([#860](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/860)) ([a82c9d32](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/a82c9d3272e3a83d22f70f174133dd26c24eee21))

### Bug Fixes

* Use a version for  to avoid GitHub API rate limiting on CI workflows ([#876](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/876)) ([2a0319ec](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/2a0319ec3244169997c6dac0d7850897ba9b9162))

Co-authored-by: Anton Babenko <anton@antonbabenko.com>

### [3.18.1](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.18.0...v3.18.1) (2022-10-27)

### Bug Fixes

* Update CI configuration files to use latest version ([#850](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/850)) ([b94561dc](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/b94561dc61b8bbedb5e36e0334e030edf03a1c7b))

## [3.18.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.17.0...v3.18.0) (2022-10-21)

### Features

* Added ability to specify CloudWatch Log group name for VPC Flow logs ([#847](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/847)) ([80d63188](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/80d631884126075e1adbe2d410f46ef6b9ea8a19))

Co-authored-by: Anton Babenko <anton@antonbabenko.com>

## [3.17.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.16.1...v3.17.0) (2022-10-21)

### Features

* Add custom subnet names ([#816](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/816)) ([4416e379](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/4416e379ed9a9b650a12a629441410f326b44c0c))

Co-authored-by: Anton Babenko <anton@antonbabenko.com>

### [3.16.1](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.16.0...v3.16.1) (2022-10-14)

### Bug Fixes

* Prevent an error when VPC Flow log log_group and role is not created ([#844](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/844)) ([b0c81ad6](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/b0c81ad61214069f8fa6d35492716c9d4cac9096))

## [3.16.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.15.0...v3.16.0) (2022-09-26)

### Features

* Add IPAM IPv6 support ([#718](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/718)) ([4fe7745d](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/4fe7745ddb675af3bd50daf335ad3ffa16d08a98))

Co-authored-by: Bryant Biggs <bryantbiggs@gmail.com>

## [3.15.0](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.14.4...v3.15.0) (2022-09-25)

### Features

* Add IPAM IPv4 support ([#716](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/716)) ([6eddcad7](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/6eddcad72867cd9df536d13ea8fdac15e0eebbd4))

Fix broken link in readme

### [3.14.4](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.14.3...v3.14.4) (2022-09-05)

### Bug Fixes

* Remove EC2-classic deprecation warnings by hardcoding classiclink values to `null` ([#826](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/826)) ([736931b0](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/736931b0a707115a1fbeb45e0d6f784199cba95e))

### [3.14.3](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.14.2...v3.14.3) (2022-09-02)

### Bug Fixes

* Allow `security_group_ids` to take `null` values ([#825](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/825)) ([67ef09a1](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/67ef09a1717f155d9a2f22a867230bf872af4cef))

Allow `security_grroup_ids` to take `null` values

### [3.14.2](https://github.com/terraform-aws-modules/terraform-aws-vpc/compare/v3.14.1...v3.14.2) (2022-06-20)

### Bug Fixes

* Compact CIDR block outputs to avoid empty diffs ([#802](https://github.com/terraform-aws-modules/terraform-aws-vpc/issues/802)) ([c3fd1566](https://github.com/terraform-aws-modules/terraform-aws-vpc/commit/c3fd1566df23cc4a2d3447b1964956964b9830a3))