[AUTO] Increment version to 2.12.0.0

[opensearch-trigger-bot[bot]]

• Incremented version to 2.12.0.0.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.73%. Comparing base (07dbfc7) to head (6eebe42). Report is 12 commits behind head on 2.x.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 2.x #344 +/- ## ======================================= Coverage 94.73% 94.73% ======================================= Files 5 5 Lines 152 152 Branches 45 45 ======================================= Hits 144 144 Misses 8 8 ```

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