Fix typings for unittest.TestCase.assertLessEqual (#10798)

Author: ImogenBits

stdlib/unittest/case.pyi

@@ -126,9 +126,9 @@ class TestCase:
     @overload
     def assertLess(self, a: _T, b: SupportsDunderGT[_T], msg: Any = None) -> None: ...
     @overload
-    def assertLessEqual(self, a: SupportsDunderLT[_T], b: _T, msg: Any = None) -> None: ...
+    def assertLessEqual(self, a: SupportsDunderLE[_T], b: _T, msg: Any = None) -> None: ...
     @overload
-    def assertLessEqual(self, a: _T, b: SupportsDunderGT[_T], msg: Any = None) -> None: ...
+    def assertLessEqual(self, a: _T, b: SupportsDunderGE[_T], msg: Any = None) -> None: ...
     # `assertRaises`, `assertRaisesRegex`, and `assertRaisesRegexp`
     # are not using `ParamSpec` intentionally,
     # because they might be used with explicitly wrong arg types to raise some error in tests.