chore(deps): update cachetools requirement in /bots/gsbot

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@v5.3.2...v6.2.6)

---
updated-dependencies:
- dependency-name: cachetools
  dependency-version: 6.2.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

bots/gsbot/requirements.txt

@@ -15,7 +15,7 @@ aiohttp>=3.13.5
 requests>=2.31.0
 
 # Caching
-cachetools>=5.3.2
+cachetools>=6.2.6
 
 # Testing
 pytest>=8.4.2