Corrected Colors enum under Python 3.11 (#2590)

Co-authored-by: Adam Hopkins <adam@amhopkins.com>
Fixes https://github.com/sanic-org/sanic/issues/2589

tests/test_logging.py

@@ -10,6 +10,7 @@ import pytest
 import sanic
 
 from sanic import Sanic
+from sanic.log import Colors
 from sanic.log import LOGGING_CONFIG_DEFAULTS, logger
 from sanic.response import text
 
@@ -250,3 +251,14 @@ def test_verbosity(app, caplog, app_verbosity, log_verbosity, exists):
 
     if app_verbosity == 0:
         assert ("sanic.root", logging.INFO, "DEFAULT") in caplog.record_tuples
+
+
+def test_colors_enum_format():
+    assert f'{Colors.END}' == Colors.END.value
+    assert f'{Colors.BOLD}' == Colors.BOLD.value
+    assert f'{Colors.BLUE}' == Colors.BLUE.value
+    assert f'{Colors.GREEN}' == Colors.GREEN.value
+    assert f'{Colors.PURPLE}' == Colors.PURPLE.value
+    assert f'{Colors.RED}' == Colors.RED.value
+    assert f'{Colors.SANIC}' == Colors.SANIC.value
+    assert f'{Colors.YELLOW}' == Colors.YELLOW.value