Updates to actions/upload-artifact v4

Author: paynecrl97

.github/workflows/create-stack.yml

@@ -59,7 +59,7 @@ jobs:
       # Publish any diagnostic bundles as an artifact:
       # NOTE: Normally the 'orgflow-actions/setup' action would do this, but that action depends on the stack having already been created.
       - name: Publish diagnostic bundle
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: orgflow_diag_${{ github.job }}_${{ github.run_attempt }}