Update module mattn/go-runewidth to v0.0.8

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/mattn/go-runewidth	require	patch	v0.0.7 -> v0.0.8

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Release Notes

mattn/go-runewidth

### [`v0.0.8`](https://togithub.com/mattn/go-runewidth/compare/v0.0.7...v0.0.8) [Compare Source](https://togithub.com/mattn/go-runewidth/compare/v0.0.7...v0.0.8)

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