build(deps): bump external/bpf_conformance from `6356e3e` to `22b6df4` (#415)

Bumps [external/bpf_conformance](https://github.com/Alan-Jowett/bpf_conformance) from `6356e3e` to `22b6df4`.
- [Release notes](https://github.com/Alan-Jowett/bpf_conformance/releases)
- [Commits](https://github.com/Alan-Jowett/bpf_conformance/compare/6356e3ee03b2c1a70fd6839a85713974bab999b3...22b6df461372f4b736c6b042c836ef73323c8a3a)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/external/bpf_conformance b/external/bpf_conformance
index 6356e3e..22b6df4 160000
--- a/external/bpf_conformance
+++ b/external/bpf_conformance
@@ -1 +1 @@
-Subproject commit 6356e3ee03b2c1a70fd6839a85713974bab999b3
+Subproject commit 22b6df461372f4b736c6b042c836ef73323c8a3a