Apply ruff/pyupgrade rule UP004

UP004 Class inherits from `object`

Not required or recommended in Python 3 any more.

Author: DimitriPapadopoulos

src/pytest_dependency.py

@@ -11,7 +11,7 @@
 _ignore_unknown = False
 
 
-class DependencyItemStatus(object):
+class DependencyItemStatus:
     """Status of a test item in a dependency manager.
     """
 
@@ -31,7 +31,7 @@ def isSuccess(self):
         return list(self.results.values()) == ['passed', 'passed', 'passed']
 
 
-class DependencyManager(object):
+class DependencyManager:
     """Dependency manager, stores the results of tests.
     """