Update github actions (#33)

Author: brichet

.github/workflows/pages.yml

@@ -81,7 +81,7 @@ jobs:
       - name: site
         run: doit site
 
-      - uses: actions/upload-pages-artifact@v1
+      - uses: actions/upload-pages-artifact@v3
         with:
           path: build/pages-lite
 
@@ -96,4 +96,4 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v4