{Core} Update next breaking change release number to 2.80.0 (#32338)

Author: ReaNAiveD

src/azure-cli-core/azure/cli/core/breaking_change.py

@@ -15,7 +15,7 @@
 
 logger = get_logger()
 
-NEXT_BREAKING_CHANGE_RELEASE = '2.79.0'
+NEXT_BREAKING_CHANGE_RELEASE = '2.80.0'
 NEXT_BREAKING_CHANGE_DATE = 'Nov 2025'
 DEFAULT_BREAKING_CHANGE_TAG = '[Breaking Change]'