Update supported version for must_exist parameter in update aliases API

[gaobinlong]

Description

This PR enables the parameter must_exist in update aliases API and will be release in 2.12.0, in order to ensure the backward compatibility checks pass, the supported version in yaml test file was set to 3.0.0 in that PR, after the PR was merged and backport to 2.x, we need to update the supported version to 2.12.0 in main branch so that the backward compatibility checks can cover the change.

Backport 2.x is not needed.

Related Issues

#2949

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• Public documentation issue/PR created

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[github-actions]

Compatibility status:

Checks if related components are compatible with change 3db976b

Incompatible components

Incompatible components: [https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/custom-codecs.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/cross-cluster-replication.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/alerting.git]

[github-actions]

❌ Gradle check result for 840a83f: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 6895233: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❕ Gradle check result for 3db976b: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.remotestore.RemoteIndexPrimaryRelocationIT.testPrimaryRelocationWhileIndexing

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c8ae7f0) 71.35% compared to head (3db976b) 71.49%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #11872      +/-   ##
============================================
+ Coverage     71.35%   71.49%   +0.13%     
- Complexity    59332    59428      +96     
============================================
  Files          4921     4921              
  Lines        278989   278989              
  Branches      40543    40543              
============================================
+ Hits         199068   199457     +389     
+ Misses        63420    62980     -440     
- Partials      16501    16552      +51     

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