[skip ci] docker: update build steps for MicroPython action

Ensure the bin directory is cleared and recreated before running the Docker container to avoid conflicts.

Signed-off-by: Chiho Sin <[email protected]>

Author: chihosin

action.yml

@@ -27,6 +27,8 @@ runs:
   steps:
     - id: build_micropython
       run: |
+        sudo rm -rf $GITHUB_WORKSPACE/bin
+        sudo mkdir -p $GITHUB_WORKSPACE/bin
         docker run --rm \
           --env GITHUB_ACTIONS \
           --env REPO_REMOTE \