use already built wheels

Author: sfc-gh-mkeller

.github/workflows/build_test.yml

@@ -158,7 +158,7 @@ jobs:
       - name: Install tox
         run: python -m pip install tox>=4
       - name: Run tests
-        run: python -m tox run -e `echo py${PYTHON_VERSION/\./}-{extras,unit,integ,pandas,sso}-ci | sed 's/ /,/g'`
+        run: python -m tox run --installpkg dist/*.whl -e `echo py${PYTHON_VERSION/\./}-{extras,unit,integ,pandas,sso}-ci | sed 's/ /,/g'`
         env:
           PYTHON_VERSION: ${{ matrix.python-version }}
           cloud_provider: ${{ matrix.cloud-provider }}