chore(deps): bump cachetools from 7.0.5 to 7.0.6

Bumps [cachetools](https://github.com/tkem/cachetools) from 7.0.5 to 7.0.6.
- [Changelog](https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/tkem/cachetools/compare/v7.0.5...v7.0.6)

---
updated-dependencies:
- dependency-name: cachetools
  dependency-version: 7.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -15,7 +15,7 @@ python-telegram-bot==22.7
 # can't be hard-pinned due to telegram-bot pinning httpx with ~
 httpx>=0.24.1
 humanize==4.15.0
-cachetools==7.0.5
+cachetools==7.0.6
 requests==2.33.1
 urllib3==2.6.3
 certifi==2026.4.22