Bump external/ubpf from `3daceb8` to `2c163d6` (#3311)

Bumps [external/ubpf](https://github.com/iovisor/ubpf) from `3daceb8` to `2c163d6`.
- [Commits](3daceb8aad...2c163d6645)

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

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external/ubpf

@@ -1 +1 @@
-Subproject commit 3daceb8aaddacc31c2b626ec1d719bebd2669494
+Subproject commit 2c163d66458c513de5ec54d7fcaed26bf86fcd21