Bump 3rdparty/bpftool from c428db1 to 77a7298

Bumps [3rdparty/bpftool](https://github.com/libbpf/bpftool) from `c428db1` to `77a7298`.
- [Release notes](https://github.com/libbpf/bpftool/releases)
- [Commits](libbpf/bpftool@c428db1...77a7298)

---
updated-dependencies:
- dependency-name: 3rdparty/bpftool
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>