Bump packaging from 26.1 to 26.2 in /tools

Bumps [packaging](https://github.com/pypa/packaging) from 26.1 to 26.2.
- [Release notes](https://github.com/pypa/packaging/releases)
- [Changelog](https://github.com/pypa/packaging/blob/main/CHANGELOG.rst)
- [Commits](pypa/packaging@26.1...26.2)

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

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

Author: dependabot[bot]

tools/wpt/requirements_install.txt

@@ -1,2 +1,2 @@
 mozinstall==2.1.0
-packaging==26.1
+packaging==26.2

tools/wptrunner/requirements.txt

@@ -4,7 +4,7 @@ mozinfo==1.2.3  # https://bugzilla.mozilla.org/show_bug.cgi?id=1621226
 mozlog==8.1.0
 mozprocess==1.4.0
 mozshellutil==1.0.0
-packaging==26.1
+packaging==26.2
 pillow==11.3.0; python_version == '3.9'
 pillow==12.1.1; python_version >= '3.10'
 requests==2.32.3