Run notebook tests with latest dependencies (because of better features)

tox.ini

@@ -13,11 +13,10 @@ isolated_build = True
 # this issue is resolved by running pytest-cov within tox development mode, thus not creating an sdist
 usedevelop = true
 commands =
-; Clean up coverage data and run the tests as well as the notebook tests.
-; The latter are run only in this environment.
+; Clean up coverage data and run the tests.
+; Notebook tests are run in the env with the latest dependencies (see below).
     coverage erase
     pytest -n 4 --cov --cov-append --cov-report=term-missing tests
-    pytest -n 4 notebooks
 deps =
     pytest
     pytest-cov
@@ -44,6 +43,9 @@ allowlist_externals =
 [testenv:py_latest_dependencies]
 commands =
     pytest
+; Run the notebook tests with latest dependencies because the newer library versions have better features 
+; which some of the notebooks make use of
+    pytest notebooks
 deps =
     pytest
 ;   NOTE: For some reason including this into setup.py makes things slow locally, fail silently on gitlab