[PATCH] fix(build): Add missing cstdint includes (#3159)

[PATCH] fix(build): Add missing cstdint includes (#3159)

In GCC 15, cstdint is less commonly included in stdlib headers so we
need explicit includes: https://gcc.gnu.org/gcc-15/porting_to.html

See-Also: https://bugs.gentoo.org/937526

Signed-off-by: John Helmert III <ajak@gentoo.org>
Gbp-Pq: Name add_missing_cstdint_includes.patch