Merge pull request #569 from RalfJung/deploy

bump versions in deploy workflow

Author: RalfJung

.github/workflows/deploy.yml

@@ -24,7 +24,7 @@ jobs:
         mdbook build
         mdbook test
     - name: Upload Artifact
-      uses: actions/upload-pages-artifact@v1.0.8
+      uses: actions/upload-pages-artifact@v3
       with:
         path: reference/book
 
@@ -45,4 +45,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - id: deployment
-        uses: actions/deploy-pages@v2.0.0
+        uses: actions/deploy-pages@v4