BLD: Fix final test install (#296)

Author: gerrymanoim

.github/workflows/release.yml

@@ -37,6 +37,5 @@ jobs:
 
     - name: Install and test running
       run: |
-        python -m pip install --upgrade pip
-        pip install --extra-index-url qgrid
+        pip install qgrid
         python -c 'import qgrid;print(qgrid.__version__)'