Update artifact upload/download versions

Author: Buried-In-Code

.github/workflows/publishing.yaml

@@ -16,7 +16,7 @@ jobs:
         run: pip install build
       - name: Build a binary wheel and a source tarball
         run: python -m build
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: python-package-distributions
           path: dist/
@@ -34,7 +34,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: python-package-distributions
           path: dist/