Bump external/ebpf-verifier from 14b27b2 to 84fcbe6 (#3732)

Bumps [external/ebpf-verifier](https://github.com/vbpf/ebpf-verifier) from `14b27b2` to `84fcbe6`.
- [Release notes](https://github.com/vbpf/ebpf-verifier/releases)
- [Commits](vbpf/ebpf-verifier@14b27b2...84fcbe6)

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

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