fix path to clean

Author: Irakus

.github/workflows/clean-runner.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - name: "Clean workdir before checkout"
         run: |
-          sudo rm -rf $RUNNER_WORKSPACE/_work/*
+          sudo rm -rf $GITHUB_WORKSPACE/* || true
       - name: Checkout code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with: