Update changelog for integrations/opensearch (#1937)

Co-authored-by: sjrl <10526848+sjrl@users.noreply.github.com>

Author: HaystackBot

integrations/opensearch/CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [integrations/opensearch-v4.2.0] - 2025-06-12
+
+### 🐛 Bug Fixes
+
+- Fix passing filters and topks to OpenSearchHybridRetriever at runtime (#1936)
+
+
 ## [integrations/opensearch-v4.1.0] - 2025-06-11
 
 ### 🐛 Bug Fixes