sysutils/burp-devel: Update to 2.3.12

Changelog:

• Fix Windows memory breakage when restoring long paths.
• Add long directories to tests.
• Simplify windows mempool code.
• Ability to choose to attempt to strip VSS on Windows restore or not, as well as disabling the Windows restore api, with '-x' and '-X' and options.

https://github.com/grke/burp/blob/2.3.12/CHANGELOG

PR: 239715
Submitted by: Lorenzo Salvadore <phascolarctos@protonmail.ch> (maintainer)