Google Provider Version 4 compatibility fix

[victorcadena]

In order to not migrate to version 5 and support backwards compatibility, use a version of the provider in version 4 as a minimum

https://registry.terraform.io/providers/hashicorp/google/4.85.0/docs/resources/storage_bucket#nested_soft_delete_policy

[google-cla[bot]]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[github-actions[bot]]

This PR is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days