drop macos-26

Author: anutosh491

.github/workflows/main.yml

@@ -191,8 +191,6 @@ jobs:
             os: ubuntu-24.04
           - name: osx15-arm
             os: macos-15
-          - name: osx26-arm
-            os: macos-26
 
     steps:
       - uses: actions/checkout@v5