Update GHA workflows

.github/workflows/deploy.yml

@@ -16,12 +16,12 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: 18
-          cache: yarn
+          cache: npm
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: npm ci
       - name: Build website
-        run: yarn build
+        run: npm run build
 
       # Popular action to deploy to GitHub Pages:
       # Docs: https://github.com/peaceiris/actions-gh-pages#%EF%B8%8F-docusaurus

.github/workflows/test-deploy.yml

@@ -16,9 +16,9 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: 18
-          cache: yarn
+          cache: npm
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: npm ci
       - name: Test build website
-        run: yarn build
+        run: npm run build