chore(deps): bump librt from 0.14.0 to 0.15.0 (#15425)

Bumps [librt](https://github.com/mypyc/librt) from 0.14.0 to 0.15.0.
- [Commits](mypyc/librt@v0.14.0...v0.15.0)

---
updated-dependencies:
- dependency-name: librt
  dependency-version: 0.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

ci-constraints-requirements.txt

@@ -96,7 +96,7 @@ iniconfig==2.3.0 ; python_full_version >= '3.10'
     # via pytest
 jinja2==3.1.6
     # via sphinx
-librt==0.14.0 ; platform_python_implementation != 'PyPy'
+librt==0.15.0 ; platform_python_implementation != 'PyPy'
     # via mypy
 markupsafe==3.0.3
     # via jinja2