Update workflow

Author: master

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements_dev.txt
-        python setup.py develop
+        python -m pip install --editable .
     - name: Lint with black
       run: |
         black --line-length 80 --check --diff tensorflow_riemopt