Added pnpm action setup

Author: alexandercerutti

.github/workflows/ci.yml

@@ -17,7 +17,10 @@ on:
 
 jobs:
   test:
-    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v5
-    with:
-      license-check: true
-      lint: true
+    - uses: pnpm/action-setup@v4
+      with:
+        version: 9
+    - uses: fastify/workflows/.github/workflows/plugins-ci.yml@v5
+      with:
+        license-check: true
+        lint: true