fix: add posargs to tox config

tox.ini

@@ -55,7 +55,7 @@ allowlist_externals=
 commands_pre=
     poetry install --no-root --sync
 commands=
-    coverage run --source={toxinidir} -m pytest --junitxml={[_vars]build_root}/junit.xml
+    coverage run --source={toxinidir} -m pytest --junitxml={[_vars]build_root}/junit.xml {posargs}
     coverage html --directory {[_vars]build_root}/htmlcov/
     coverage report
     coverage xml -o {env:COVERAGE_XML_FILE:{[_vars]build_root}/coverage.xml}