[Backport 2.x] Correctly ignore depandabot branches during push

[opensearch-trigger-bot]

Backport 27c5493 from #4077

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/1375/
• CommitID: 66eaea4

[codecov-commenter]

Codecov Report

Merging #4108 (66eaea4) into 2.x (01123f8) will increase coverage by 0.10%.
The diff coverage is 73.75%.

@@             Coverage Diff              @@
##                2.x    #4108      +/-   ##
============================================
+ Coverage     70.47%   70.57%   +0.10%     
- Complexity    56648    56724      +76     
============================================
  Files          4553     4553              
  Lines        272795   272770      -25     
  Branches      40049    40049              
============================================
+ Hits         192240   192496     +256     
+ Misses        64450    64067     -383     
- Partials      16105    16207     +102     

Impacted Files	Coverage Δ
...opensearch/index/translog/NoOpTranslogManager.java	68.96% <33.33%> (-2.47%)	⬇️
...search/index/translog/InternalTranslogManager.java	58.69% <59.09%> (-1.81%)	⬇️
.../opensearch/index/engine/NRTReplicationEngine.java	69.11% <78.57%> (+12.62%)	⬆️
...va/org/opensearch/index/engine/EngineTestCase.java	86.39% <81.25%> (-0.77%)	⬇️
...va/org/opensearch/index/engine/InternalEngine.java	74.05% <84.00%> (+0.28%)	⬆️
...ava/org/opensearch/action/NoSuchNodeException.java	0.00% <0.00%> (-50.00%)	⬇️
...cluster/coordination/PendingClusterStateStats.java	20.00% <0.00%> (-48.00%)	⬇️
...h/action/ingest/SimulateDocumentVerboseResult.java	60.71% <0.00%> (-39.29%)	⬇️
...ensearch/client/indices/DetailAnalyzeResponse.java	20.54% <0.00%> (-34.25%)	⬇️
...r/src/main/java/org/opensearch/http/HttpUtils.java	33.33% <0.00%> (-33.34%)	⬇️
... and 481 more

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