chore: update version examples in readme (#259)
chore: update version examples in readme (#259)

Readme had outdated versions. That caused me to try out some very old versions in my terraform setup.

Co-authored-by: Bharath KKB <5eb445e1a3eb6b9f0a66a3e9a88175319195a30f@gmail.com>
terraform-google-modules/terraform-google-sql-db,terraform-google-modules/terraform-google-sql-db