Bump cachetools from 5.3.0 to 5.3.1 (#566)

Bumps [cachetools](https://github.com/tkem/cachetools) from 5.3.0 to 5.3.1.
- [Changelog](https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst)
- [Commits](tkem/cachetools@v5.3.0...v5.3.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 aiohttp==3.8.4
 appdirs==1.4.4
 async-timeout==4.0.2
-cachetools==5.3.0
+cachetools==5.3.1
 chardet==5.1.0
 gidgethub==5.2.1
 multidict==6.0.4