ci: enable license checking (#80)

Author: Fdawgs

.github/workflows/ci.yml

@@ -12,4 +12,6 @@ on:
 
 jobs:
   test:
-    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v3
+    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v3
+    with:
+      license-check: true