Pin every action to latest SHA (#10779)

Co-authored-by: Eric Bailey <git@esb.lol>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

.github/workflows/claude-mention.yml

@@ -54,18 +54,18 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           fetch-depth: 1
 
       - name: Configure AWS credentials (OIDC)
-        uses: aws-actions/configure-aws-credentials@v6
+        uses: aws-actions/configure-aws-credentials@e7f100cf4c008499ea8adda475de1042d6975c7b # v6.2.0
         with:
           role-to-assume: ${{ secrets.AWS_BEDROCK_REVIEW_ROLE_ARN }}
           aws-region: us-east-2
 
       - name: Claude
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@4d7e1f0cd85743fdc93b1c8040ab54395da024e2 # v1.0.149
         with:
           use_bedrock: 'true'
           additional_permissions: |