Update livekit deps

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	Age	Adoption	Passing	Confidence
github.com/livekit/mediatransportutil	require	digest	a67d961 -> 881d3dc
github.com/livekit/protocol	require	digest	2d633a5 -> bad3fc9
github.com/livekit/server-sdk-go/v2	require	patch	v2.1.1-0.20240405184340-9417bd1f3718 -> v2.1.1

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Release Notes

livekit/server-sdk-go (github.com/livekit/server-sdk-go/v2)

### [`v2.1.1`](https://togithub.com/livekit/server-sdk-go/compare/v2.1.0...v2.1.1) [Compare Source](https://togithub.com/livekit/server-sdk-go/compare/v2.1.0...v2.1.1)

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