sunshine: Update to v2026.516.143833

[HuricanDev]

(I am not the maintainer of this package, just updating it in light of a security fix)

Summary

Updates to the latest version which brings in a lot of fixes, features as well as an important security fix.
Also added the licence file.
I believe the missing libgcc_s.so.1 and libstdc++.so.6 in abi_used_libs are a result of this change: LizardByte/Sunshine#4321 and the switch to statically linking those two libs. Not sure what (if anything) should be done regarding that in the package.yml

Test Plan

Installed sunshine and then ran it and made sure the web UI worked.

Checklist

• Package was built and tested against unstable
• This change could gainfully be listed in the weekly sync notes once merged
• I agree to license this contribution and all my previous contributions under the licensing terms in LICENSE.md and have the power and authority to grant those licenses.

[davidjharder]

You don't have to worry about abi_used_libs changes for something that is an automatic builddep like libgcc, usually

If, for instance, you saw libnotify.so.4 drop out of used libs, that would be a clue to investigate if that dependency is no longer needed, or if something else has changed.

[EbonJaeger]

Since this contains security fixes, can you add the following to the commit message?

**Security**
- CVE-2025-54081
- GHSA-ph75-mgxh-mv57

That way, it gets picked up by our script for the weekly security update list. Bonus points if you find the actual CVE number for the new advisory.

[HuricanDev]

Since this contains security fixes, can you add the following to the commit message?

**Security**
- CVE-2025-54081
- GHSA-ph75-mgxh-mv57

That way, it gets picked up by our script for the weekly security update list. Bonus points if you find the actual CVE number for the new advisory.

Added.
Link to the new advisory. It was previously private but has just very recently been made public.

[EbonJaeger]

LGTM, thanks!