Bump external/ubpf from f1f85cb to 2434b93 (#3835)

Bumps [external/ubpf](https://github.com/iovisor/ubpf) from `f1f85cb` to `2434b93`.
- [Commits](iovisor/ubpf@f1f85cb...2434b93)

---
updated-dependencies:
- dependency-name: external/ubpf
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>