fix(validate-brewfiles): use main branch

Author: renner0e

.github/workflows/validate-brewfiles.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       - name: Set up Homebrew
-        uses: Homebrew/actions/setup-homebrew@8c478e7f5c2c2df9efba834a3568d4fe35cdb2a3
+        uses: Homebrew/actions/setup-homebrew@main
 
 
       - name: Validate Brewfiles
@@ -37,4 +37,4 @@ jobs:
               fi
               set +xeuo pipefail
               echo "::endgroup::"
-            done
+            done