codespell release 2.4.2-1 for unstable

[dgit please-upload source=codespell version=2.4.2-1]
[dgit distro=debian split --quilt=unapplied]
[dgit upstream-tag=v2.4.2 upstream=2ccb47ff45ad361a21071a7eedda4c37e6ae8c5a]