package/bpftool: bump to version 7.5.0
Changes: https://github.com/libbpf/bpftool/releases
This upgrade fixes as well linking problems to LLVM libraries in
the previous version on Buildroot 2025.05 and master.
Signed-off-by: Federico Pellegrin <fede@evolware.org>
Signed-off-by: Julien Olivain <ju.o@free.fr>