chore: checkpoint before Python removal

vendor/email_address/.github/workflows/security-audit.yml

@@ -0,0 +1,36 @@
+name: Security audit
+
+on:
+  push:
+    paths:
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+
+  pull_request:
+    paths:
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+
+  schedule:
+  - cron: '12 12 12 * *'
+
+jobs:
+  security_audit:
+    runs-on: ubuntu-latest
+    permissions:
+      checks: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+
+      - uses: actions-rs/audit-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+