Add security audit work flow. (#172)

Author: molpopgen

.github/workflows/security.yaml

@@ -0,0 +1,17 @@
+name: Security audit
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the Repository
+        uses: actions/checkout@v2
+      
+      - name: Perform the security audit
+        uses: actions-rs/audit-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}