Prepare for setting security plugin 3.0.0 baseline JDK version to JDK-21 (update Github Actions)

[reta]

Description

Prepare for setting security plugin 3.0.0 baseline JDK version to JDK-21 (update Github Actions)

• Category (Enhancement, New feature, Bug fix, Test fix, Refactoring, Maintenance, Documentation)
• Why these changes are required?
• What is the old behavior before changes and new behavior after changes?

Issues Resolved

Part of https://github.com/opensearch-project/security/issues/4407, changing GA first to unblock https://github.com/opensearch-project/security/pull/4457

Is this a backport? If so, please add backport PR # and/or commits #

Testing

N/A

Check List

• [ ] New functionality includes testing
• [ ] New functionality has been documented
• [ ] Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 65.26%. Comparing base (681a944) to head (1b5d85c). Report is 1 commits behind head on main.

:exclamation: Current head 1b5d85c differs from pull request most recent head 65da4ef

Please upload reports for the commit 65da4ef to get more accurate results.

Additional details and impacted files

[](https://app.codecov.io/gh/opensearch-project/security/pull/4461?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) ```diff @@ Coverage Diff @@ ## main #4461 +/- ## ========================================== - Coverage 65.43% 65.26% -0.18% ========================================== Files 312 312 Lines 22037 22035 -2 Branches 3557 3557 ========================================== - Hits 14421 14382 -39 - Misses 5843 5884 +41 + Partials 1773 1769 -4 ``` [see 8 files with indirect coverage changes](https://app.codecov.io/gh/opensearch-project/security/pull/4461/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project)