Fix: Adding 'upgrade' cloudwatch log export type for AWS RDS Cluster

[matharoo]

Community Note

• Please vote on this pull request by adding a 👍 reaction to the original pull request comment to help the community and maintainers prioritize this request
• Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for pull request followers and do not help prioritize the request

This PR adds the upgrade cloudwatch log export type which is supported by AWS for RDS clusters with Postgres engine.

Affected resource: aws_rds_cluster

Closes #26791

Output from acceptance testing:

[ Need help with running test make testacc TESTS=TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql PKG=rds ]:

$ make testacc TESTS=TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql PKG=rds

...

[ewbankkit]

LGTM 🚀.

% ACCTEST_TIMEOUT=360m make testacc TESTARGS='-run=TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql' PKG=rds ACCTEST_PARALLELISM=1
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/rds/... -v -count 1 -parallel 1  -run=TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql -timeout 360m
=== RUN   TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql
=== PAUSE TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql
=== CONT  TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql
--- PASS: TestAccRDSCluster_EnabledCloudWatchLogsExports_postgresql (1739.28s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/rds	1743.501s

[ewbankkit]

@matharoo Thanks for the contribution 🎉 👏.

[github-actions]

This functionality has been released in v4.33.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.