lang/rust: Update patch for git2-rs
Tested by: michaelo
Approved by: otis (mentor), mikael (rust maintainer)
MFH: 2025Q4
Differential Revision: https://reviews.freebsd.org/D52988
(cherry picked from commit 45e5316c383b8924e875ba0dc86e5f1a1f1c0a38)