r/aws_elasticache_replication_group: Fix error marshaling prior state when upgrading from v4.67.0 to v5.59.0

[ewbankkit]

Description

The v4.67.0 schema contained block attribute named cluster_mode which was removed at v5.0.0.
The v5.59.0 schema introduced a new string attribute named cluster_mode.
This caused an error when upgrading state from v4.67.0 to v5.59.0.

Relations

Closes #38464.

Output from Acceptance Testing

% ACCTEST_TIMEOUT=1080m make testacc TESTARGS='-run=TestAccElastiCacheReplicationGroup_stateUpgrade5590' PKG=elasticache
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.5 test ./internal/service/elasticache/... -v -count 1 -parallel 20  -run=TestAccElastiCacheReplicationGroup_stateUpgrade5590 -timeout 1080m
=== RUN   TestAccElastiCacheReplicationGroup_stateUpgrade5590
=== PAUSE TestAccElastiCacheReplicationGroup_stateUpgrade5590
=== CONT  TestAccElastiCacheReplicationGroup_stateUpgrade5590
--- PASS: TestAccElastiCacheReplicationGroup_stateUpgrade5590 (660.31s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elasticache	665.302s

% ACCTEST_TIMEOUT=1080m make testacc TESTARGS='-run=TestAccElastiCacheReplicationGroup_stateUpgrade5270' PKG=elasticache
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.5 test ./internal/service/elasticache/... -v -count 1 -parallel 20  -run=TestAccElastiCacheReplicationGroup_stateUpgrade5270 -timeout 1080m
=== RUN   TestAccElastiCacheReplicationGroup_stateUpgrade5270
=== PAUSE TestAccElastiCacheReplicationGroup_stateUpgrade5270
=== CONT  TestAccElastiCacheReplicationGroup_stateUpgrade5270
--- PASS: TestAccElastiCacheReplicationGroup_stateUpgrade5270 (872.26s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elasticache	877.202s

[github-actions]

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[github-actions]

Thank you for your contribution! 🚀

A new usage of AWS SDK for Go V1 was detected. Please prefer AWS SDK for Go V2 for all net-new services. If this is an enhancement or bug fix to an existing AWS SDK Go V1 based resource, this comment can be safely ignored.

For additional information refer to the AWS SDK for Go Versions page in the contributor guide.

[jar-b]

LGTM 🚀

[jgrumboe]

Thanks @ewbankkit! That was quick! 🚀

[github-actions]

This functionality has been released in v5.60.0 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]

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