[asterisk-announce] asterisk release 20.5.2

[Asterisk Development Team]

The Asterisk Development Team would like to announce  
the release of asterisk-20.5.2.

The release artifacts are available for immediate download at  
https://github.com/asterisk/asterisk/releases/tag/20.5.2
and
https://downloads.asterisk.org/pub/telephony/asterisk

This release resolves issues reported by the community  
and would have not been possible without your participation.

Thank You!


Change Log for Release asterisk-20.5.2
========================================

Links:
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 - [Full ChangeLog](https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-20.5.2.md)  
 - [GitHub Diff](https://github.com/asterisk/asterisk/compare/20.5.1...20.5.2)  
 - [Tarball](https://downloads.asterisk.org/pub/telephony/asterisk/asterisk-20.5.2.tar.gz)  
 - [Downloads](https://downloads.asterisk.org/pub/telephony/asterisk)  

Summary:
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- res_rtp_asterisk: Fix regression issues with DTLS client check

User Notes:
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Upgrade Notes:
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Closed Issues:
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  - #500: [bug regression]: res_rtp_asterisk doesn't build if pjproject isn't used
  - #503: [bug]: The res_rtp_asterisk DTLS check against ICE candidates fails when it shouldn't
  - #505: [bug]: res_pjproject: ast_sockaddr_cmp() always fails on sockaddrs created by ast_sockaddr_from_pj_sockaddr()