fix: bumping terraform version from 0.12.6 to 0.12.7 in circleci to include...

fix: bumping terraform version from 0.12.6 to 0.12.7 in circleci to include regexall function (#474)

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 
 terraform: &terraform
   docker:
-    - image: hashicorp/terraform:0.12.6
+    - image: hashicorp/terraform:0.12.7
   working_directory: /tmp/workspace/terraform
 
 jobs: