Add dependency review

Add a workflow that reviews dependencies added by pull requests for vulnerabilities.

Author: martincostello

.github/workflows/dependency-review.yml

@@ -0,0 +1,20 @@
+name: dependency-review
+
+on:
+  pull_request:
+    branches: [ main ]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Review dependencies
+        uses: actions/dependency-review-action@v1