Bump pip-audit from 2.8.0 to 2.9.0

Bumps [pip-audit](https://github.com/pypa/pip-audit) from 2.8.0 to 2.9.0.
- [Release notes](https://github.com/pypa/pip-audit/releases)
- [Changelog](https://github.com/pypa/pip-audit/blob/main/CHANGELOG.md)
- [Commits](pypa/pip-audit@v2.8.0...v2.9.0)

---
updated-dependencies:
- dependency-name: pip-audit
  dependency-version: 2.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Pipfile

@@ -14,7 +14,7 @@ PyJWT = "==2.6.0"
 black = "==25.1.0"
 coverage = "==7.6.12"
 flake8 = "==7.1.2"
-pip-audit = "==2.8.0"
+pip-audit = "==2.9.0"
 pytest = "==8.3.5"
 
 [requires]