chore(ci): Add trufflehog (#79)

.github/workflows/secrets_scanner.yaml

@@ -1,15 +1,17 @@
 name: Leaked Secrets Scan
-on: [pull_request]
+on:
+  pull_request:
+  merge_group:
 jobs:
   TruffleHog:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
         with:
           fetch-depth: 0
       - name: TruffleHog OSS
-        uses: trufflesecurity/trufflehog@d0d59c2e77cbdddf892c1b8c61b8c94b461d7f92 # v3.72.0
+        uses: trufflesecurity/trufflehog@f2a0ea0b70288cf25ba46d906034417555a207a8 # v3.69.0
         with:
           path: ./
           base: ${{ github.event.repository.default_branch }}