correct clang gha

Author: pachadotdev

.github/workflows/R-CMD-check.yaml

@@ -47,7 +47,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: pachadotdev/clang-format@v1
+      - uses: pachadotdev/clang-format@main
         if: matrix.config.custom == 'clang-format'
         with:
           version: '20'