Update secrets-scanner.yml workflow

Author: tinyfish-github-terraform[bot]

.github/workflows/secrets-scanner.yml

@@ -18,7 +18,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: TruffleHog OSS
-        uses: trufflesecurity/trufflehog@main
+        uses: trufflesecurity/trufflehog@f446421baf832d6356c42c1743d99abff52ff334 # v3.95.7
         with:
           path: ./
           base: ${{ github.event.repository.default_branch }}