🛠️ Bump actions/deploy-pages from 1 to 2 (#642)

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -161,4 +161,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v2