fix(deps): update module github.com/livekit/server-sdk-go to v1.0.15

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/livekit/server-sdk-go	require	patch	v1.0.13 -> v1.0.15

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Release Notes

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

### [`v1.0.15`](https://togithub.com/livekit/server-sdk-go/compare/v1.0.13...v1.0.15) [Compare Source](https://togithub.com/livekit/server-sdk-go/compare/v1.0.13...v1.0.15)

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