chore(deps): update actions/deploy-pages action to v2 (#273)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/GHPages.yml

@@ -40,4 +40,4 @@ jobs:
           path: ./docs/.vuepress/dist
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v2