fix(deps): update github.com/livekit/server-sdk-go/v2 digest to b6d1838

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/livekit/server-sdk-go/v2	require	digest	a5da15b → b6d1838

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[renovate]

ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 5 additional dependencies were updated

Details:

Package	Change
github.com/livekit/protocol	v1.47.0 -> v1.48.1-0.20260624204523-bd5703442db6
github.com/pion/webrtc/v4	v4.2.11 -> v4.2.14
github.com/containerd/containerd/v2	v2.2.3 -> v2.2.4
github.com/pion/dtls/v3	v3.1.3 -> v3.1.4
github.com/pion/sctp	v1.9.5 -> v1.10.0