Update module go-chi/chi to v4.1.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/go-chi/chi	require	patch	v4.1.1+incompatible -> v4.1.2

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Release Notes

go-chi/chi

### [`v4.1.2`](https://togithub.com/go-chi/chi/blob/master/CHANGELOG.md#v412-2020-06-02) [Compare Source](https://togithub.com/go-chi/chi/compare/v4.1.1...v4.1.2) - fix that handles MethodNotAllowed with path variables, thank you [@​caseyhadden](https://togithub.com/caseyhadden) for your contribution - fix to replace nested wildcards correctly in RoutePattern, thank you @​[@​unmultimedio](https://togithub.com/unmultimedio) for your contribution - History of changes: see

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