chore(deps): add used development dependencies

pyproject.toml

@@ -19,3 +19,9 @@ packages = [
 name = "jcloud"
 url = "https://gitea.jcloud-services.ddns.net/api/packages/jCloud/pypi/simple/"
 priority = "supplemental"
+
+[dependency-groups]
+dev = [
+    "pytest (>=9.1.1,<10.0.0)",
+    "pytest-expectdir (>=1.2.0,<2.0.0)"
+]