Add a dependency review workflow action (#242)

Ensure dependencies with vulnerabilities aren't introduced.

Signed-off-by: Eric Brown <ericwb@users.noreply.github.com>

.github/workflows/dependency-review.yml

@@ -0,0 +1,24 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part
+# of a Pull Request, surfacing known-vulnerable versions of the packages
+# declared or updated in the PR. Once installed, if the workflow run is
+# marked as required, PRs introducing known-vulnerable packages will be
+# blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+# Public documentation: https://docs.github.com/en/code-security/supply-chain-security/understanding-your-software-supply-chain/about-dependency-review#dependency-review-enforcement
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v1