chore(deps): update actions/deploy-pages action to v4

Author: renovate[bot]

.github/workflows/GHPages.yml

@@ -42,4 +42,4 @@ jobs:
           path: ./build/eslint-plugin-svelte
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v3
+        uses: actions/deploy-pages@v4