Run ruff format to fix linter errors

Agent-Logs-Url: https://github.com/jaraco/cssutils/sessions/662c6470-9068-482c-801d-b50dea6088a7

Co-authored-by: jaraco <308610+jaraco@users.noreply.github.com>

Author: Copilot

tests/test_cssimportrule.py

@@ -361,9 +361,7 @@ def fetcher(url):
         assert ir2.styleSheet.media.mediaText == 'all'
         assert ir2.styleSheet.parentStyleSheet is None  # ir.styleSheet
         assert ir2.styleSheet.title == 'title2'
-        assert (
-            ir2.styleSheet.cssText == '@charset "ascii";\na {\n    color: red\n    }'
-        )
+        assert ir2.styleSheet.cssText == '@charset "ascii";\na {\n    color: red\n    }'
 
         sheet = cssutils.parseString('@import "CANNOT-FIND.css";')
         ir = sheet.cssRules[0]

tests/test_parse.py

@@ -116,9 +116,7 @@ def test_parseUrl(self):
                 assert sheet1.cssText == cssText
                 assert sheet2.encoding == override
                 if sheet1.cssText and cssText.startswith('@charset'):
-                    assert sheet2.cssText == (
-                        cssText.replace('ascii', override)
-                    )
+                    assert sheet2.cssText == (cssText.replace('ascii', override))
                 elif sheet1.cssText:
                     assert sheet2.cssText == (overrideprefix + '\n' + cssText)
                 else: