chore(ci): add security scanning workflow (#338)

Add trivy security scanning workflow to ristretto.

.github/workflows/ci-aqua-security-trivy-tests.yml

@@ -0,0 +1,33 @@
+name: ci-aqua-security-trivy-tests
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - ready_for_review
+    branches:
+      - main 
+  schedule:
+    - cron: "0 * * * *"
+jobs:
+  build:
+    name: trivy-tests
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Run Trivy vulnerability scanner
+        uses: aquasecurity/trivy-action@master
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'          
+          format: 'sarif'
+          output: 'trivy-results.sarif'
+      - name: Upload Trivy scan results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: 'trivy-results.sarif'