By setting `sensitive = true` on a variable or output, Terraform will
redact it from the plan/apply output. This prevents secrets from being
logged. This is a new feature in Terraform v0.14.
* Upgrade db from Postgres 11 -> 13
* Upgrade tfe and google provider plugins
* Remove google-beta provider since it's no longer needed
* Add .terraform-version file to support tfenv
* Add .vscode/ settings to play nice with VSCode
* Clean up .gitignore