Bump external/ebpf-verifier from abc6981 to 5fcd594 (#2236)

Bumps [external/ebpf-verifier](https://github.com/vbpf/ebpf-verifier) from `abc6981` to `5fcd594`.
- [Release notes](https://github.com/vbpf/ebpf-verifier/releases)
- [Commits](vbpf/ebpf-verifier@abc6981...5fcd594)

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

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