pytest: add missing with-core marker

pkgs/clan-cli/pyproject.toml

@@ -23,7 +23,7 @@ log_level = "DEBUG"
 log_format = "%(levelname)s: %(message)s\n       %(pathname)s:%(lineno)d::%(funcName)s"
 addopts = "--cov . --cov-report term --cov-report html:.reports/html --no-cov-on-fail --durations 5 --color=yes --new-first" # Add --pdb for debugging
 norecursedirs = "tests/helpers"
-markers = [ "impure" ]
+markers = [ "impure", "with_core" ]
 
 [tool.mypy]
 plugins = ["deal.mypy"]