Switching to npm

Author: vishr

.github/workflows/deploy.yaml

@@ -16,13 +16,14 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: 18
-          cache: yarn
+          cache: npm
+          cache-dependency-path: website
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: npm ci
         working-directory: website
       - name: Build website
-        run: yarn build
+        run: npm run build
         working-directory: website
 
       # Popular action to deploy to GitHub Pages: