Update changelog with new release v2.6.1 [ci skip] (#7339)

Co-authored-by: Donny Wong <[email protected]>

Changelog.md

@@ -6,19 +6,26 @@
 
 ### ✨ New features and improvements
 
-- Added zoom and rotate functionality to PDF viewer (#7306)
+### 🐛 Bug fixes
+
+- Ensures row selection for peer reviewer unassigning has the same validation checks as individual selections (#7274)
+
+### 🔧 Internal changes
+
+## [v2.6.1]
+
+### ✨ New features and improvements
+
 - Give instructors the ability to delete a TA from the Users Graders Tab (#7304)
+- Added zoom and rotate functionality to PDF viewer (#7306)
 
 ### 🐛 Bug fixes
 
 - Ensure we handle JSON parsing exceptions when converting Jupyter Notebooks (#7308)
 - Fixed bug in grading context menu for editing/deleting annotations (#7314)
 - Fixed bug in grading annotations table when deleting annotations (#7314)
-- Ensures row selection for peer reviewer unassigning has the same validation checks as individual selections (#7274)
 - Ensure correct LTI version of lti_user_id is used on launch (#7335)
 
-### 🔧 Internal changes
-
 ## [v2.6.0]
 
 ### ✨ New features and improvements