Update module github.com/pion/stun to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/pion/stun	require	major	v0.6.1 -> v2.0.0

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Release Notes

pion/stun (github.com/pion/stun)

v2.0.0

Compare Source

Changelog

• 4ff55da Start pion/stun@v2
• 26873a1 Update module github.com/pion/transport/v2 to v3
• d1f1ac8 Update module github.com/pion/transport/v2 to v2.2.2
• ba204e8 Update CI configs to v0.10.11

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Configuration

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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[codecov]

Codecov Report

Patch has no changes to coverable lines.

Files Changed	Coverage
client.go	ø
internal/allocation/allocation.go	ø
internal/client/allocation.go	ø
internal/client/tcp_alloc.go	ø
internal/client/transaction.go	ø
internal/client/udp_conn.go	ø
internal/proto/chann.go	ø
internal/proto/connection_id.go	ø
internal/proto/data.go	ø
internal/proto/dontfrag.go	ø
... and 13 more

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