Update adhoc.yml

Author: fvh-P

.github/workflows/adhoc.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Select Xcode
-      run: sudo xcode-select -s '/Applications/Xcode_12.5.1.app/Contents/Developer'
+      run: sudo xcode-select -s '/Applications/Xcode_13.2.1.app/Contents/Developer'
     - uses: actions/cache@v2
       with:
         path: Carthage