ci: use bash on windows

.github/workflows/check.yml

@@ -49,13 +49,16 @@ jobs:
       run: |
         python -m dcoraid --version
     - name: Test with pytest
+      # Use bash on Windows, otherwise || exit 0 does not work
+      shell: bash
       env:
         DCOR_API_KEY: ${{ secrets.DCOR_API_KEY }}
       # Tests always pass but pytest sometimes fails with 138 or 139 due to
       # threading issues. We check in the next step whether any tests failed.
       run: |
         coverage run --source=dcoraid -m pytest tests --ignore tests/test_gui.py -x
-        coverage run --source=dcoraid -m pytest tests/test_gui.py -x
+        # The GUI tests segfault randomly (test in next step whether it worked)
+        coverage run --source=dcoraid -m pytest tests/test_gui.py -x || exit 0
     - name: Test whether test passed
         # check if pytest wrote failures to the "pytest-failures.txt" file
         # (exits 0 if the file does not exist)