Pin action version in CodeQL

.github/workflows/codeql.yml

@@ -23,13 +23,13 @@ jobs:
         language: [ 'python' ]
     steps:
     - name: Checkout repository
-      uses: actions/checkout@main
+      uses: actions/checkout@v3
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@main
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         queries: security-and-quality
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@main
+      uses: github/codeql-action/analyze@v2
       with:
         category: "/language:${{matrix.language}}"