[Backport 2.x] Bump org.apache.logging.log4j:log4j-core from 2.17.1 to 2.20.0

[Xtansia]

Backport 0b42c2c from #8307

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/19980/
• CommitID: 2c8cd3c
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/19983/
• CommitID: 320ebf4
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testStrictWeightedRoutingWithCustomString

• URL: https://build.ci.opensearch.org/job/gradle-check/19986/
• CommitID: 83f484b
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #8645 (fcd0820) into 2.x (5a0b6b0) will increase coverage by 0.54%.
The diff coverage is 77.20%.

@@             Coverage Diff              @@
##                2.x    #8645      +/-   ##
============================================
+ Coverage     70.55%   71.10%   +0.54%     
- Complexity    57090    57543     +453     
============================================
  Files          4745     4745              
  Lines        270776   270901     +125     
  Branches      39967    39974       +7     
============================================
+ Hits         191051   192623    +1572     
+ Misses        63320    62067    -1253     
+ Partials      16405    16211     -194     

Impacted Files	Coverage Δ
...org/opensearch/common/logging/LogConfigurator.java	16.48% <ø> (-1.61%)	⬇️
...pensearch/common/logging/OpenSearchJsonLayout.java	0.00% <0.00%> (ø)
.../store/exception/ChecksumCombinationException.java	0.00% <ø> (ø)
...java/org/opensearch/index/translog/Checkpoint.java	72.34% <ø> (ø)
...ain/java/org/opensearch/threadpool/ThreadPool.java	84.59% <ø> (-0.30%)	⬇️
...earch/index/store/RemoteSegmentStoreDirectory.java	86.34% <64.91%> (-5.71%)	⬇️
...org/opensearch/common/io/InputStreamContainer.java	87.50% <66.66%> (ø)
...search/index/shard/RemoteStoreRefreshListener.java	83.09% <72.09%> (-0.33%)	⬇️
...ex/translog/transfer/BlobStoreTransferService.java	88.88% <86.84%> (-0.59%)	⬇️
...on/blobstore/transfer/RemoteTransferContainer.java	64.78% <100.00%> (+8.45%)	⬆️
... and 9 more

... and 471 files with indirect coverage changes

[kotwanikunal]

Re-ran gradle check since it timed out.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/20053/
• CommitID: fcd0820