qt6 tests: Update ignored messages

On Qt 6.3: 'ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.'

tests/end2end/fixtures/quteprocess.py

@@ -119,6 +119,10 @@ def is_ignored_lowlevel_message(message):
         '<frozen importlib._bootstrap>:*: RuntimeWarning: builtins.type size changed, '
         'may indicate binary incompatibility. Expected 872 from C header, got 880 from '
         'PyObject',
+
+        # Qt 6.2 / 6.3
+        'Fontconfig error: Cannot load default config file: No such file: (null)',
+        'Fontconfig error: Cannot load default config file',
     ]
     return any(testutils.pattern_match(pattern=pattern, value=message)
                for pattern in ignored_messages)
@@ -264,7 +268,7 @@ def is_ignored_chromium_message(line):
         # ContextResult::kTransientFailure: Failed to send
         # GpuChannelMsg_CreateCommandBuffer.
         'ContextResult::kTransientFailure: Failed to send '
-        'GpuChannelMsg_CreateCommandBuffer.',
+        'Gpu*CreateCommandBuffer.',
         # [156330:156350:1121/120052.060701:WARNING:
         # important_file_writer.cc(97)]
         # temp file failure: /home/florian/.local/share/qutebrowser/