Pin GH actions to SHA to avoid mutable refs (#3973)

.github/workflows/codeql.yml

@@ -1,10 +1,8 @@
 name: "CodeQL"
-
 on:
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ v6 ]
-
+    branches: [v6]
 jobs:
   analyze:
     name: Analyze
@@ -13,23 +11,18 @@ jobs:
       actions: read
       contents: read
       security-events: write
-
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'java' ]
-
+        language: ['java']
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
-
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@32dc499307d133bb5085bae78498c0ac2cf762d5 # v2
         with:
           languages: ${{ matrix.language }}
-
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v2
-
+        uses: github/codeql-action/autobuild@32dc499307d133bb5085bae78498c0ac2cf762d5 # v2
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v2
+        uses: github/codeql-action/analyze@32dc499307d133bb5085bae78498c0ac2cf762d5 # v2