Merge topic 'update-kwsys'

51e3b1b4b2 cmSystemTools: Simplify string case conversion methods
bc89442828 Merge branch 'upstream-KWSys' into update-kwsys
f4258b93d2 KWSys 2026-02-08 (29120a5d)
85a4d0cde7 cmList: Simplify overload selection for function pointer

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !11669