[Bug 295879] net-im/tox: update to 0.2.23

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295879

            Bug ID: 295879
           Summary: net-im/tox: update to 0.2.23
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: vvd@FreeBSD.org
          Reporter: eric@camachat.org
          Assignee: vvd@FreeBSD.org
             Flags: maintainer-feedback?(vvd@FreeBSD.org)

Created attachment 271531
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=271531&action=edit
update to 0.2.23

### Release notes

This release fixes a critical bug, other bug fixes and some small features and
test improvements.

The critical bug was discovered during a manual audit performed by iphy. You
can find more on the issue at
https://github.com/TokTok/c-toxcore/security/advisories/GHSA-42vg-9mg3-399f .

Other bug fixes where applied all over the codebase and should result in an
even more stable core experience.

A minor noteworthy feature that was added is a function to get a list of group
chats, further improving ngc quality of life.

As always, none of the public facing apis (tox.h/toxav.h/toxencryptsave.h/etc)
where modified or removed, which should make this update seamless.

#### Bug Fixes

- limit number of saved group peers when loading from disk And add
`unpack_gc_saved_peers` bounds test.
([de31d805](https://github.com/TokTok/c-toxcore/commit/de31d80571ed2e8520db41a88c3354545ba16d9a))
- wrong comment in group code
([147dbe11](https://github.com/TokTok/c-toxcore/commit/147dbe11d1b077a8861bcbff6a96247e31b083b2))
- **DHT:**
  - refactor memory handling of loaded dht state Previous code could
double-free if more than one dht states per tox-file and a following allocation
fails.
([6e959f36](https://github.com/TokTok/c-toxcore/commit/6e959f36734f8baacba60c2e7dbe7d2f5f3f8164))
  - Suppress the warning about IPv6 nodes when IPv6 is turned off
([71c354bf](https://github.com/TokTok/c-toxcore/commit/71c354bfea8720f0fbdc40d3c67290799a64df51))
- **av:** Fix Use-After-Free when peer goes offline.
([dbb65223](https://github.com/TokTok/c-toxcore/commit/dbb652239a228c7536ac473856bee42b6e3698c2))
- **gca:** announce max sizes where 32bytes too large
([5080b21c](https://github.com/TokTok/c-toxcore/commit/5080b21ca5fe2404cba70139fc3cf19dd3992127))
- **onion:** Size GCA announce response buffer to actual content length.
([23853004](https://github.com/TokTok/c-toxcore/commit/23853004d933cadb53439353c1d156f2db856755))
- **test:** fix mypy failure
([8016a502](https://github.com/TokTok/c-toxcore/commit/8016a5023bffb85ac0386ed14f57c96cb29e79ea))

#### Features

- Add `Tox_Iterate_Options` for granular control over `tox_iterate`.
([10975240](https://github.com/TokTok/c-toxcore/commit/109752403e3a9bc4f9d1a72a5da40441bbcfa95c))
- Add a function to get the list of valid group chat numbers.
([8f37a2f1](https://github.com/TokTok/c-toxcore/commit/8f37a2f17aa4e77d91f80953b89c7b7bd39034f4))

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