Update Gradle to 7.6-rc3

[reta]

Signed-off-by: Andriy Redko andriy.redko@aiven.io

Description

Update Gradle to 7.6-rc3

Issues Resolved

N/A

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

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.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/6817/
• CommitID: a5c0a91

[codecov-commenter]

Codecov Report

Merging #5216 (a5c0a91) into main (4fc5c8d) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #5216      +/-   ##
============================================
- Coverage     71.00%   70.97%   -0.04%     
+ Complexity    58168    58147      -21     
============================================
  Files          4708     4708              
  Lines        277565   277565              
  Branches      40190    40190              
============================================
- Hits         197094   196990     -104     
- Misses        64310    64436     +126     
+ Partials      16161    16139      -22     

Impacted Files	Coverage Δ
...ava/org/opensearch/action/NoSuchNodeException.java	0.00% <0.00%> (-50.00%)	⬇️
...adcast/BroadcastShardOperationFailedException.java	33.33% <0.00%> (-44.45%)	⬇️
...nsearch/rest/action/cat/RestCatRecoveryAction.java	43.61% <0.00%> (-40.43%)	⬇️
...java/org/opensearch/threadpool/ThreadPoolInfo.java	56.25% <0.00%> (-37.50%)	⬇️
...pensearch/action/ingest/DeletePipelineRequest.java	31.25% <0.00%> (-37.50%)	⬇️
...r/src/main/java/org/opensearch/http/HttpUtils.java	33.33% <0.00%> (-33.34%)	⬇️
...va/org/opensearch/node/AdaptiveSelectionStats.java	11.11% <0.00%> (-33.34%)	⬇️
...opensearch/index/reindex/BulkByScrollResponse.java	48.38% <0.00%> (-27.42%)	⬇️
...ndex/seqno/RetentionLeaseBackgroundSyncAction.java	37.50% <0.00%> (-26.79%)	⬇️
...a/org/opensearch/index/mapper/MapperException.java	75.00% <0.00%> (-25.00%)	⬇️
... and 477 more

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