Add release notes for 3.3.0 (#1494)

Author: opensearch-ci-bot

release-notes/opensearch-index-management.release-notes-3.3.0.0.md

@@ -0,0 +1,20 @@
+## Version 3.3.0 Release Notes
+
+Compatible with OpenSearch and OpenSearch Dashboards version 3.3.0
+
+### Features
+* Add support in SM Plugin to delete snapshots created manually ([#1452](https://github.com/opensearch-project/index-management/pull/1452))
+
+### Enhancements
+* Using Scripted Avg Class in AvgAggregationBuilder in place of double ([#1460](https://github.com/opensearch-project/index-management/pull/1460))
+* Do not include global state in snapshot step ([#1480](https://github.com/opensearch-project/index-management/pull/1480))
+
+### Bug Fixes
+* Fix the build ([#1491](https://github.com/opensearch-project/index-management/pull/1491))
+* Fix: Update System.env syntax for Gradle 9 compatibility ([#1474](https://github.com/opensearch-project/index-management/pull/1474))
+
+### Infrastructure
+* Dependabot: bump 1password/load-secrets-action from 2 to 3 ([#1473](https://github.com/opensearch-project/index-management/pull/1473))
+
+### Maintenance
+* [AUTO] Increment version to 3.3.0-SNAPSHOT ([#1467](https://github.com/opensearch-project/index-management/pull/1467))