Lock checkout

Co-authored-by: Junwang Zhao <[email protected]>

Author: Fokko

.github/workflows/license_check.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Check license header
         uses: apache/skywalking-eyes@main
         env: