[Backport 1.3] Add workflow to publish maven snapshots

[opensearch-trigger-bot]

Backport 267e162 from #6394.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/12613/
• CommitID: 7dd934d

[codecov-commenter]

Codecov Report

Merging #6742 (7dd934d) into 1.3 (f9030a4) will decrease coverage by 0.06%.
The diff coverage is n/a.

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@@             Coverage Diff              @@
##                1.3    #6742      +/-   ##
============================================
- Coverage     77.85%   77.80%   -0.06%     
+ Complexity    63421    63402      -19     
============================================
  Files          4454     4454              
  Lines        274964   274964              
  Branches      41167    41167              
============================================
- Hits         214086   213942     -144     
- Misses        43957    44086     +129     
- Partials      16921    16936      +15     

see 473 files with indirect coverage changes

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