ci: add Trivy security scan (#1)

Author: pocketrocket

.github/workflows/security.yml

@@ -0,0 +1,28 @@
+name: Security
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+  schedule:
+    - cron: "0 6 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  trivy:
+    name: Trivy Security Scan
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Trivy scan (deps, secrets, IaC, Dockerfiles)
+        uses: aquasecurity/trivy-action@v0.36.0
+        with:
+          scan-type: fs
+          scan-ref: .
+          scanners: vuln,secret,misconfig
+          severity: CRITICAL,HIGH
+          ignore-unfixed: true
+          format: table
+          exit-code: "0"