fix(deps): update rust crate libc to 0.2.168

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
libc	dependencies	patch	0.2.167 -> 0.2.168

---

Release Notes

rust-lang/libc (libc)

v0.2.168

Compare Source

Added

• Linux: Add new process flags (#​4174)
• Linux: Make IFA_* constants available on all Linux targets #​4185
• Linux: add MAP_DROPPABLE #​4173
• Solaris, Illumos: add SIGRTMIN and SIGRTMAX #​4171
• Unix, Linux: adding POSIX memccpy and mempcpy GNU extension [https://github.com/rust-lang/libc/pull/4186](https://github.com/rust-lang/libc/pull/4186)6.

Deprecated

• FreeBSD: Deprecate the CAP_UNUSED* and CAP_ALL* constants (#​4183)

Fixed

• Make the Debug implementation for unions opaque (#​4176)

Other

• Allow the unpredictable_function_pointer_comparisons lint where needed #​4177
• CI: Upload artifacts created by libc-test #​4180
• CI: Use workflow commands to group output by target #​4179
• CI: add caching #​4183

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[github-actions]

Test results

22 tests  ±0   22 ✅ ±0   0s ⏱️ ±0s
 2 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit b4cb39e. ± Comparison against base commit fd2a197.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.42%. Comparing base (fd2a197) to head (b4cb39e).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #415   +/-   ##
=======================================
  Coverage   50.42%   50.42%           
=======================================
  Files          21       21           
  Lines        1063     1063           
=======================================
  Hits          536      536           
  Misses        527      527           

Flag	Coverage Δ
back-end	50.85% <ø> (ø)
front-end	0.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.