Improve warning visibility with due date and reference url

Author: abravalheri

setuptools/dep_util.py

@@ -1,14 +1,16 @@
-import warnings
-
 from ._distutils import _modified
+from .warnings import SetuptoolsDeprecationWarning
 
 
 def __getattr__(name):
     if name not in ['newer_group', 'newer_pairwise_group']:
         raise AttributeError(name)
-    warnings.warn(
+    SetuptoolsDeprecationWarning.emit(
         "dep_util is Deprecated. Use functions from setuptools.modified instead.",
-        DeprecationWarning,
-        stacklevel=2,
+        "Please use `setuptools.modified` instead of `setuptools.dep_util`.",
+        see_url="https://github.com/pypa/setuptools/pull/4069",
+        due_date=(2024, 5, 21),
+        # Warning added in v69.0.0 on 2023/11/20,
+        # See https://github.com/pypa/setuptools/discussions/4128
     )
     return getattr(_modified, name)