Updated pypi actions to v4 of artifact actions

Author: lindonroberts

.github/workflows/upload_pypi.yml

@@ -26,7 +26,7 @@ jobs:
         run: python -m build
 
       - name: Store the distribution packages
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: python-package-distributions
           path: dist/
@@ -43,7 +43,7 @@ jobs:
       id-token: write
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: python-package-distributions
           path: dist/