[AUTO] Add release notes for 3.7.0

[opensearch-ci-bot]

Add release notes for 3.7.0

Borderline Calls

• Add salt generation to demo security configuration #6022: Placed in Enhancements — could be Maintenance since it's about encouraging better configuration, but it adds new enforcement logic for salt generation which enhances security posture.
• Facilitate FIPS-compliant store resolution #6059: Placed in Enhancements — could be Infrastructure since it primarily affects test infrastructure, but the production code changes (BCFKS support, store type detection) are meaningful enhancements for FIPS compliance.
• Support Jackson 3.x release line #6078: Placed in Enhancements — could be Maintenance since it's about compatibility with a new library version, but it required code changes to support the new API surface.
• Add BCFKS keystore generation utilities #6087: Placed in Documentation — could be Infrastructure since it includes utility scripts, but the PR description emphasizes documentation of how keystores were created.
• Fix typo: occured -> occurred #6141 and Fix typo: Recieved -> Received #6142: Placed in Documentation — could be Maintenance as they are minor typo fixes, but since they correct user-facing log messages they fit Documentation.
• Refactor certificate revocation validation #6042: Placed in Refactoring — could be Bug Fixes since it improves error diagnostics, but the primary intent is structural refactoring for testability.
• support fallback values in DLS/FLS variables #6111: Placed in Features — could be Enhancements since it builds on existing DLS/FLS variable support, but fallback values represent a net new capability that enables previously impossible configurations.
• Follow up to #6058: Remove unnecessary log message for JWT #6086: Placed in Maintenance — could be Bug Fixes since it removes an unintended debug log, but it's a minor cleanup rather than fixing broken functionality.

[github-actions]

PR Reviewer Guide 🔍

(Review updated until commit b7cb607)

Here are some key observations to aid the review process:

🧪 No relevant tests

🔒 No security concerns identified

✅ No TODO sections

🔀 No multiple PR themes

⚡ No major issues detected

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.97%. Comparing base (6c1ee3e) to head (468da34).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6165      +/-   ##
==========================================
- Coverage   75.00%   74.97%   -0.04%     
==========================================
  Files         452      451       -1     
  Lines       29115    29099      -16     
  Branches     4384     4383       -1     
==========================================
- Hits        21839    21816      -23     
- Misses       5250     5254       +4     
- Partials     2026     2029       +3     

see 8 files with indirect coverage changes

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[cwperks]

Same as JS repo. Let's omit these typo fixes PRs from release notes.

[cwperks]

Let's omit this one from release notes.

[github-actions]

Persistent review updated to latest commit b7cb607