[5.1.x] Fixed CVE-2024-45230 -- Mitigated potential DoS in urlize and urlizetrunc template filters.

Thanks MProgrammer (https://hackerone.com/mprogrammer) for the report.

tests/template_tests/filter_tests/test_urlize.py

@@ -321,6 +321,11 @@ class FunctionTests(SimpleTestCase):
             '<a href="http://example.com?x=" rel="nofollow">'
             "http://example.com?x=&amp;</a>;;",
         )
+        self.assertEqual(
+            urlize("http://example.com?x=&amp.;...;", autoescape=False),
+            '<a href="http://example.com?x=" rel="nofollow">'
+            "http://example.com?x=&amp</a>.;...;",
+        )
 
     def test_brackets(self):
         """

tests/utils_tests/test_html.py

@@ -375,6 +375,7 @@ class TestUtilsHtml(SimpleTestCase):
             "&:" + ";" * 100_000,
             "&.;" * 100_000,
             ".;" * 100_000,
+            "&" + ";:" * 100_000,
         )
         for value in tests:
             with self.subTest(value=value):