[AUTO] [2.x] Added bwc version 2.3.1.

[opensearch-trigger-bot]

I've noticed that a new tag 2.3.0 was pushed, and added a bwc version 2.3.1.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/3065/
• CommitID: ab6cf86

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/3111/
• CommitID: 787c4d9

[tlfeng]

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':distribution:bwc:bugfix:buildBwcLinuxTar'.
> Building 2.3.1 didn't generate expected file /var/jenkins/workspace/gradle-check/search/distribution/bwc/bugfix/build/bwc/checkout-2.3/distribution/archives/linux-tar/build/distributions/opensearch-min-2.3.1-SNAPSHOT-linux-x64.tar.gz

Re-ran gradle check after version 2.3.1 bumped on 2.3 branch #4511.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/3114/
• CommitID: 787c4d9