feat: add prettier config

.github/actions/setup-and-validate/action.yml

@@ -4,9 +4,11 @@ runs:
   using: "composite"
   steps:
     - name: Set up Node.js
-      uses: actions/setup-node@v1.4.6
+      uses: actions/setup-node@v3
       with:
-        node-version: '16'
+        node-version: "16"
+        cache: "npm"
+        cache-dependency-path: package-lock.json
 
     - name: install deps
       run: npm ci

.github/workflows/validate-pr.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup and validate themes
         uses: ./.github/actions/setup-and-validate