Update cachetools requirement in /community/front-end/ofe

Updates the requirements on [cachetools](https://github.com/tkem/cachetools) to permit the latest version.
- [Changelog](https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst)
- [Commits](tkem/cachetools@v2.0.0...v6.2.1)

---
updated-dependencies:
- dependency-name: cachetools
  dependency-version: 6.2.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

community/front-end/ofe/requirements.txt

@@ -6,7 +6,7 @@ astroid==3.3.11
 attrs==25.3.0
 # This should be supported by zoneinfo in Python 3.9+
 backports.zoneinfo==0.2.1;python_version<"3.9"
-cachetools>=2.0,<6.0
+cachetools>=2.0,<7.0
 certifi==2025.10.5
 cffi>=2.0.0
 cfgv==3.4.0