Update Javadocs artifact upload action to version 3 and adjust upload path

Author: SableRaf

.github/workflows/build-and-deploy-javadoc.yml

@@ -80,9 +80,10 @@ jobs:
         ant doc
 
     - name: Upload Javadocs artifact
-      uses: actions/upload-pages-artifact@v1
+      uses: actions/upload-pages-artifact@v3
       with:
-        path: processing4/build/javadoc/core/**
+        name: github-pages
+        path: processing4/build/javadoc
 
     - name: Clean up the processing4 directory
       run: |