Add tags to blue green deployment creation

[stijndehaes]

Rollback Plan

If a change needs to be reverted, we will publish an updated version of the library.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

No changes.

Description

This fixes a bug where the blue green deployment did not have any tags attached to it since it wasn't set when creating the deployment.
In cases where IAM rights are based on resource tags this results in blue green deployments not working with the terraform provider.

Relations

None

References

Output from Acceptance Testing

I currently ran a single test TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion, which I changed
to ensure the defaults tags from the provider where used.
I inspected the RDS blue green deployment in the AWS console, since I don't know how I can automate this in a test, since after terraform apply the blue green deployment resource is gone

GOROOT=/Users/stijndehaes/go/pkg/mod/golang.org/[email protected] #gosetup
GOPATH=/Users/stijndehaes/go #gosetup
/Users/stijndehaes/go/pkg/mod/golang.org/[email protected]/bin/go test -c -o /Users/stijndehaes/Library/Caches/JetBrains/GoLand2025.2/tmp/GoLand/___TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion_in_github_com_hashicorp_terraform_provider_aws_internal_service_rds.test github.com/hashicorp/terraform-provider-aws/internal/service/rds #gosetup
/Users/stijndehaes/go/pkg/mod/golang.org/[email protected]/bin/go tool test2json -t /Users/stijndehaes/Library/Caches/JetBrains/GoLand2025.2/tmp/GoLand/___TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion_in_github_com_hashicorp_terraform_provider_aws_internal_service_rds.test -test.v=test2json -test.paniconexit0 -test.run ^\QTestAccRDSInstance_BlueGreenDeployment_updateEngineVersion\E$ #gosetup
2025/11/14 12:04:56 Creating Terraform AWS Provider (SDKv2-style)...
2025/11/14 12:04:56 Initializing Terraform AWS Provider (SDKv2-style)...
=== RUN   TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion
=== PAUSE TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion
=== CONT  TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion
--- PASS: TestAccRDSInstance_BlueGreenDeployment_updateEngineVersion (1771.19s)
PASS
...

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[stijndehaes]

There is a test failing because I added the provider here, for me this was the way to check if tags were added. But the process isn't automated anyway, so maybe I just remove it again?