Bump github actions (#31)

Author: elegios

.github/workflows/gh-pages.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Build with Docusaurus
         run: "npm run build"
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: 'build'
 
@@ -55,4 +55,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4