chore(deps): bump librt from 0.6.3 to 0.7.3 (#13978)

Bumps [librt](https://github.com/mypyc/librt) from 0.6.3 to 0.7.3.
- [Commits](mypyc/librt@v0.6.3...v0.7.3)

---
updated-dependencies:
- dependency-name: librt
  dependency-version: 0.7.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

ci-constraints-requirements.txt

@@ -103,7 +103,7 @@ iniconfig==2.3.0 ; python_full_version >= '3.10'
     # via pytest
 jinja2==3.1.6
     # via sphinx
-librt==0.6.3 ; python_full_version >= '3.9'
+librt==0.7.3 ; python_full_version >= '3.9'
     # via mypy
 markupsafe==2.1.5 ; python_full_version < '3.9'
     # via jinja2