[PIP] Update packaging requirement in /pulp-glue

Updates the requirements on [packaging](https://github.com/pypa/packaging) to permit the latest version.
- [Release notes](https://github.com/pypa/packaging/releases)
- [Changelog](https://github.com/pypa/packaging/blob/main/CHANGELOG.rst)
- [Commits](pypa/packaging@20.0...26.0)

---
updated-dependencies:
- dependency-name: packaging
  dependency-version: '26.0'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pulp-glue/pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
 ]
 dependencies = [
   "multidict>=6.0.5,<6.8",
-  "packaging>=20.0,<=25.0",  # CalVer
+  "packaging>=20.0,<=26.0",  # CalVer
   "requests>=2.24.0,<2.33",
   "tomli>=2.0.0,<2.1;python_version<'3.11'",
 ]