chore(ci): update workflows, use .nvmrc

.github/workflows/build.yml

@@ -2,39 +2,39 @@ name: Build
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
   build:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-    - name: Setup Node.js
-      uses: actions/setup-node@v4
-      with:
-        node-version: '20'
-        cache: 'npm'
+      - name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
+        with:
+          node-version-file: ".nvmrc"
+          cache: "npm"
 
-    - name: Install dependencies
-      run: npm ci
+      - name: Install dependencies
+        run: npm ci
 
-    - name: Lint code
-      run: npm run lint
+      - name: Lint code
+        run: npm run lint
 
-    - name: Generate themes
-      run: npm run generate
+      - name: Generate themes
+        run: npm run generate
 
-    - name: Validate output
-      run: npm run validate
+      - name: Validate output
+        run: npm run validate
 
-    - name: Check for uncommitted changes
-      run: |
-        if ! git diff --quiet; then
-          echo "Generated files have uncommitted changes!"
-          git diff
-          exit 1
-        fi
+      - name: Check for uncommitted changes
+        run: |
+          if ! git diff --quiet; then
+            echo "Generated files have uncommitted changes!"
+            git diff
+            exit 1
+          fi