Never use @main action, prefer a versioned action instead (i.e. @v1). (#16)

Author: aentinger

.github/workflows/compile-examples.yml

@@ -83,7 +83,7 @@ jobs:
         run: pip3 install pyserial
 
       - name: Compile examples
-        uses: arduino/compile-sketches@main
+        uses: arduino/compile-sketches@v1
         with:
           fqbn: ${{ matrix.board.fqbn }}
           platforms: ${{ matrix.board.platforms }}