Merge pull request (#40)

* use yarn

* upgrade nodejs from 18 to 20

Author: Calvinan132

.github/workflows/deploy.yaml

@@ -15,7 +15,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: yarn
 
       - name: Install dependencies
@@ -45,4 +45,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v4