Fix mypy error

mypy.ini

@@ -21,6 +21,11 @@ exclude = (?x)(
 # *.extern modules that actually live in *._vendor will also cause attr-defined issues on import
 disable_error_code = attr-defined
 
+# - pkg_resources tests create modules that won't exists statically before the test is run.
+#   Let's ignore all "import-not-found" since, if an import really wasn't found, then the test would fail.
+[mypy-pkg_resources.tests.*]
+disable_error_code = import-not-found
+
 # - Avoid raising issues when importing from "extern" modules, as those are added to path dynamically.
 #   https://github.com/pypa/setuptools/pull/3979#discussion_r1367968993
 # - distutils._modified has different errors on Python 3.8 [import-untyped], on Python 3.9+ [import-not-found]
@@ -29,9 +34,7 @@ disable_error_code = attr-defined
 [mypy-pkg_resources.extern.*,setuptools.extern.*,distutils._modified,jaraco.*,trove_classifiers]
 ignore_missing_imports = True
 
-# - pkg_resources tests create modules that won't exists statically before the test is run.
-#   Let's ignore all "import-not-found" since, if an import really wasn't found, then the test would fail.
 # Even when excluding vendored/generated modules, there might be problems: https://github.com/python/mypy/issues/11936#issuecomment-1466764006
-[mypy-pkg_resources.tests.*,setuptools._vendor.packaging._manylinux,setuptools.config._validate_pyproject.*]
+[mypy-setuptools._vendor.packaging._manylinux,setuptools.config._validate_pyproject.*]
 follow_imports = silent
 # silent => ignore errors when following imports