Add secrets scanning workflow (#631)

feat(security): add secrets scanning workflow

.github/workflows/security.yml

@@ -0,0 +1,29 @@
+name: Security Checks
+
+on:
+  push:
+
+permissions:
+  contents: read
+
+jobs:
+  secrets:
+    runs-on: ubuntu-latest
+    steps:
+      - shell: bash
+        run: |
+          if [ "${{ github.event_name }}" == "push" ]; then
+            echo "depth=$(($(jq length <<< '${{ toJson(github.event.commits) }}') + 2))" >> $GITHUB_ENV
+            echo "branch=${{ github.ref_name }}" >> $GITHUB_ENV
+          fi
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            echo "depth=$((${{ github.event.pull_request.commits }}+2))" >> $GITHUB_ENV
+            echo "branch=${{ github.event.pull_request.head.ref }}" >> $GITHUB_ENV
+          fi
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{env.branch}}
+          fetch-depth: ${{env.depth}}
+      - name: Scan for secrets
+        uses: trufflesecurity/trufflehog@main