update deprecated actions

Author: AaronDJohnson

.github/workflows/ci_test.yml

@@ -128,7 +128,7 @@ jobs:
         python -m pip install --upgrade pip
         pip install setuptools wheel twine
     - name: Download wheel/dist from build
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: dist
         path: dist