Update module github.com/gobwas/ws to v1.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/gobwas/ws	require	patch	v1.2.0 -> v1.2.1

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Release Notes

gobwas/ws

### [`v1.2.1`](https://togithub.com/gobwas/ws/releases/tag/v1.2.1) [Compare Source](https://togithub.com/gobwas/ws/compare/v1.2.0...v1.2.1) #### What's Changed - ws: bring back support for go1.16 by [@​ZekeLu](https://togithub.com/ZekeLu) in [https://github.com/gobwas/ws/pull/172](https://togithub.com/gobwas/ws/pull/172) #### New Contributors - [@​ZekeLu](https://togithub.com/ZekeLu) made their first contribution in [https://github.com/gobwas/ws/pull/172](https://togithub.com/gobwas/ws/pull/172) **Full Changelog**: https://github.com/gobwas/ws/compare/v1.2.0...v1.2.1

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