v4.0.0-beta.24

Changelog

• c85269b Properly handle non-media probes
• 19d0224 Added support for SRTP_NULL_HMAC_SHA1_80 cipher
• 064006d Update module github.com/pion/dtls/v2 to v2.2.12
• 17d3e97 Hold pc.mu while populating local candidates
• b874788 Update module github.com/pion/srtp/v3 to v3.0.3
• 9c6604d Drop calls to RegisterDefaultCodecs in tests
• 8780e68 Add nolint to examples
• ce37669 Delete deadcode in pion-to-pion/answer
• 287d106 Match header extensions to remote media sections