[AUTO] Increment version to 2.13.0-SNAPSHOT

[opensearch-trigger-bot[bot]]

• Incremented version to 2.13.0-SNAPSHOT.

[codecov[bot]]

Codecov Report

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

Comparison is base (f8666da) 68.70% compared to head (760fe61) 68.78%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 2.x #621 +/- ## ============================================ + Coverage 68.70% 68.78% +0.08% - Complexity 365 366 +1 ============================================ Files 43 43 Lines 2473 2473 Branches 172 172 ============================================ + Hits 1699 1701 +2 + Misses 671 669 -2 Partials 103 103 ```

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