Bump packaging in /third_party in the pip-dependencies group

Bumps the pip-dependencies group in /third_party with 1 update: [packaging](https://github.com/pypa/packaging).


Updates `packaging` from 26.0 to 26.2
- [Release notes](https://github.com/pypa/packaging/releases)
- [Changelog](https://github.com/pypa/packaging/blob/main/CHANGELOG.rst)
- [Commits](pypa/packaging@26.0...26.2)

---
updated-dependencies:
- dependency-name: packaging
  dependency-version: '26.2'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-dependencies
...

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

Author: dependabot[bot]

third_party/requirements.txt

@@ -6,7 +6,7 @@ cmake-format==0.6.13
 # Linting the source code
 bandit==1.9.4
 # Tests
-packaging==26.0
+packaging==26.2
 # Generating HTML documentation
 pygments==2.20.0
 sphinxcontrib_applehelp==2.0.0