ci: update gh pages actions

Author: antongolub

.github/workflows/docs.yml

@@ -38,10 +38,10 @@ jobs:
         run: npm run docs:build
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: 'docs/build'
 
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4