Bump webrtc-adapter from 7.6.0 to 7.6.1

Bumps [webrtc-adapter](https://github.com/webrtchacks/adapter) from 7.6.0 to 7.6.1.
- [Release notes](https://github.com/webrtchacks/adapter/releases)
- [Commits](https://github.com/webrtchacks/adapter/compare/v7.6.0...v7.6.1

)

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