Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -32,7 +32,7 @@ test_PyWake_windows:  # name the job what we like
   stage:  # build, test, deploy defined by default [2]
     test
   script:  # runs on windows machine due to tag below
-  - source activate py38
+  - source activate py38_2
   - pip install -e .[test]
   - pytest --cov-report term-missing:skip-covered --cov=py_wake --cov-config .coveragerc
   tags:  # tag for shared runner on windows machine