Update app_rtsp_sip from v2.0 to v3.1

[Copilot]

Updates the app_rtsp_sip module to v3.1, which includes fixes for camera audio socket handling and significant code improvements from v3.0.

Changes

• Dockerfile: Updated APP_RTSP_SIP_VERSION to commit 42299f029638eb832654939a66786b1803131d7d (v3.1 tag)
• config.yaml: Bumped add-on version to 6.1.0
• CHANGELOG.md: Documented the upgrade from v2.0 to v3.1

Upstream Changes

v3.1 fixes an issue where cameras were sending audio down the wrong socket by delaying the start of SIP. v3.0 introduced substantial code enhancements (~800 line changes).

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/tommyjlong/app_rtsp_sip/tags
  • Triggering command: /usr/bin/curl curl -s REDACTED (http block)
  • Triggering command: /usr/bin/curl curl -fsSL REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Update app_rtsp_sip.c to version 3.1</issue_title>
<issue_description>Hope you don't mind I create an issue rather than a PR,
I have updated app_rtsp_sip.c to version 3.1 and have tagged it as such, so requesting that the AddOn be updated with the new version.
I did do a brief executable test using the current version 6.0.0 of the AddOn (Asterisk 22.6.0) and no problems.

Best Regards

https://raw.githubusercontent.com/tommyjlong/app_rtsp_sip/refs/tags/v3.1/app_rtsp_sip.c</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Update app_rtsp_sip.c to version 3.1 #420

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