fix broken pytest_plugin in one of the CI tests

Author: Zsailer

.github/workflows/main.yml

@@ -76,7 +76,7 @@ jobs:
       - name: Run the tests on pypy and windows
         if: ${{ startsWith(matrix.python-version, 'pypy') || startsWith(matrix.os, 'windows') }}
         run: |
-          python -m pytest -vv || python -m pytest -vv --lf
+          python -m pytest --pyargs jupyter_client -vv || python -m pytest -vv --lf
 
       - name: Code coverage
         run: codecov

pyproject.toml

@@ -60,7 +60,7 @@ test = [
     "pytest-asyncio>=0.18",
     "pytest-cov",
     "pytest-timeout",
-    "jupyter_events>=0.5.0"
+    "jupyter_events[test]"
 ]
 doc = [
     "ipykernel",