create base workflow for trufflehog

Author: jamesc-grafana

.github/workflows/self-trufflehog.yaml

@@ -0,0 +1,24 @@
+name: zizmor GitHub Actions static analysis
+on:
+  push:
+  pull_request:
+
+jobs:
+  trufflehog:
+    name: Run trufflehog from current branch (self test)
+
+    permissions:
+      actions: read
+      contents: read
+
+      pull-requests: write
+      security-events: write
+
+    runs-on: ${{ !github.event.repository.private && 'ubuntu-latest' || 'ubuntu-arm64-small' }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+        with:
+          persist-credentials: false
+      - name: Run trufflehog
+        uses: trufflesecurity/trufflehog@b06f6d72a3791308bb7ba59c2b8cb7a083bd17e4 # v3.88.26