flake8 6.0.0 raises ValueError for inline comments on ignore rule lines

[Mert Kirpici]

This issue is currently affecting multiple charms after the flake8 6.0.0 release. flake8 expects to find the comments on their separate lines.

miles@mertkirpici-bastion-focal:~/repo/charm-openstack-service-checks$ make lint
Running lint checks
lint installed: black==22.10.0,click==8.1.3,flake8==6.0.0,flake8-colors==0.1.9,flake8-docstrings==1.6.0,flake8-import-order==0.18.2,mccabe==0.7.0,mypy-extensions==0.4.3,pathspec==0.10.2,pep8-naming==0.13.2,platformdirs==2.5.4,pycodestyle==2.10.0,pydocstyle==6.1.1,pyflakes==3.0.1,snowballstemmer==2.2.0,tomli==2.0.1,typing-extensions==4.4.0
lint run-test-pre: PYTHONHASHSEED='3949094690'
lint run-test: commands[0] | flake8
Traceback (most recent call last):
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/bin/flake8", line 8, in <module>
    sys.exit(main())
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/main/cli.py", line 23, in main
    app.run(argv)
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/main/application.py", line 198, in run
    self._run(argv)
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/main/application.py", line 186, in _run
    self.initialize(argv)
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/main/application.py", line 165, in initialize
    self.plugins, self.options = parse_args(argv)
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/options/parse_args.py", line 53, in parse_args
    opts = aggregator.aggregate_options(option_manager, cfg, cfg_dir, rest)
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/options/aggregator.py", line 30, in aggregate_options
    parsed_config = config.parse_config(manager, cfg, cfg_dir)
  File "/home/miles/repo/charm-openstack-service-checks/src/.tox/lint/lib/python3.8/site-packages/flake8/options/config.py", line 131, in parse_config
    raise ValueError(
ValueError: Error code '#TODO' supplied to 'ignore' option does not match '^[A-Z]{1,3}[0-9]{0,3}$'
ERROR: InvocationError for command /home/miles/repo/charm-openstack-service-checks/src/.tox/lint/bin/flake8 (exited with code 1)
____________________________________________________________________________________________________________ summary _____________________________________________________________________________________________________________
ERROR: lint: commands failed
make: *** [Makefile:63: lint] Error 1