Add Valkey engine support for memorydb resources

[sasidhar-aws]

Description

Adding support for the newly introduced Valkey engine in AWS MemoryDB.

Relations

Closes #39644

References

Output from Acceptance Testing

make testacc TESTS=TestAccMemoryDBSnapshot_basic PKG=memorydb
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.7 test ./internal/service/memorydb/... -v -count 1 -parallel 20 -run='TestAccMemoryDBSnapshot_basic'  -timeout 360m
=== RUN   TestAccMemoryDBSnapshot_basic
=== PAUSE TestAccMemoryDBSnapshot_basic
=== CONT  TestAccMemoryDBSnapshot_basic
--- PASS: TestAccMemoryDBSnapshot_basic (2894.14s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/memorydb	2898.408s

make testacc TESTS=TestAccMemoryDBClusterDataSource_basic PKG=memorydb
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.7 test ./internal/service/memorydb/... -v -count 1 -parallel 20 -run='TestAccMemoryDBClusterDataSource_basic'  -timeout 360m
=== RUN   TestAccMemoryDBClusterDataSource_basic
=== PAUSE TestAccMemoryDBClusterDataSource_basic
=== CONT  TestAccMemoryDBClusterDataSource_basic
--- PASS: TestAccMemoryDBClusterDataSource_basic (1996.97s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/memorydb	2001.265s

make testacc TESTS=TestAccMemoryDBCluster_basic PKG=memorydb 
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.7 test ./internal/service/memorydb/... -v -count 1 -parallel 20 -run='TestAccMemoryDBCluster_basic'  -timeout 360m
=== RUN   TestAccMemoryDBCluster_basic
=== PAUSE TestAccMemoryDBCluster_basic
=== CONT  TestAccMemoryDBCluster_basic
--- PASS: TestAccMemoryDBCluster_basic (1975.11s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/memorydb	1979.363s
make testacc TESTS=TestAccMemoryDBCluster_valkey PKG=memorydb
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.7 test ./internal/service/memorydb/... -v -count 1 -parallel 20 -run='TestAccMemoryDBCluster_valkey'  -timeout 360m
=== RUN   TestAccMemoryDBCluster_valkey
=== PAUSE TestAccMemoryDBCluster_valkey
=== CONT  TestAccMemoryDBCluster_valkey
--- PASS: TestAccMemoryDBCluster_valkey (2033.22s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/memorydb	2037.697s
make testacc TESTS=TestAccMemoryDBCluster_Update_engine PKG=memorydb
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.7 test ./internal/service/memorydb/... -v -count 1 -parallel 20 -run='TestAccMemoryDBCluster_Update_engine'  -timeout 360m
=== RUN   TestAccMemoryDBCluster_Update_engine
=== PAUSE TestAccMemoryDBCluster_Update_engine
=== CONT  TestAccMemoryDBCluster_Update_engine
--- PASS: TestAccMemoryDBCluster_Update_engine (3378.69s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/memorydb	3383.847s

[github-actions]

Community Note

Voting for Prioritization

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

For Submitters

• Review the contribution guide relating to the type of change you are making to ensure all of the necessary steps have been taken.
• For new resources and data sources, use skaff to generate scaffolding with comments detailing common expectations.
• Whether or not the branch has been rebased will not impact prioritization, but doing so is always a welcome surprise.

[sasidhar-aws]

Changing status to draft, as I see update behavior is slightly different than usual. I am working on code changes.