[Backport main] Releasenotes 2.2

[opensearch-trigger-bot]

Backport 8eb5da6 from #452

[codecov-commenter]

Codecov Report

Merging #510 (300587a) into main (fadc553) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main     #510      +/-   ##
============================================
- Coverage     75.85%   75.83%   -0.03%     
  Complexity     2482     2482              
============================================
  Files           315      315              
  Lines         14511    14511              
  Branches       2245     2245              
============================================
- Hits          11008    11004       -4     
- Misses         2247     2253       +6     
+ Partials       1256     1254       -2     

Impacted Files	Coverage Δ
...nt/indexstatemanagement/model/destination/Slack.kt	55.55% <0.00%> (-22.23%)	⬇️
...ensearch/indexmanagement/util/JobSchedulerUtils.kt	73.91% <0.00%> (-8.70%)	⬇️
.../rollup/action/start/TransportStartRollupAction.kt	71.76% <0.00%> (-1.18%)	⬇️
...nt/rollup/action/stop/TransportStopRollupAction.kt	76.47% <0.00%> (-1.18%)	⬇️
...arch/indexmanagement/rollup/RollupSearchService.kt	61.11% <0.00%> (ø)
...gement/indexstatemanagement/action/ShrinkAction.kt	70.58% <0.00%> (ø)
...nt/indexstatemanagement/ManagedIndexCoordinator.kt	69.29% <0.00%> (ø)
.../opensearch/indexmanagement/rollup/model/Rollup.kt	86.04% <0.00%> (+0.46%)	⬆️
...management/indexstatemanagement/MetadataService.kt	64.92% <0.00%> (+2.23%)	⬆️

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