update changelog

Author: mhordynski

packages/ragbits-core/CHANGELOG.md

@@ -4,8 +4,13 @@
 
 ## 1.2.2 (2025-08-08)
 
+- Fix: rendering iterator arguments in Prompt (#768)
+- Fix: mypy not resolving PromptOutputT Type correctly (#772)
+
 ## 1.2.1 (2025-08-04)
 
+- No changes (keeping ragbits versions synced)
+
 ## 1.2.0 (2025-08-01)
 
 - Add support for Reasoning models (#752)