Bump chardet from 5.0.0 to 5.1.0 (#527)

Bumps [chardet](https://github.com/chardet/chardet) from 5.0.0 to 5.1.0.
- [Release notes](https://github.com/chardet/chardet/releases)
- [Commits](chardet/chardet@5.0.0...5.1.0)

---
updated-dependencies:
- dependency-name: chardet
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ aiohttp==3.8.3
 appdirs==1.4.4
 async-timeout==4.0.2
 cachetools==5.2.0
-chardet==5.0.0
+chardet==5.1.0
 gidgethub==5.2.1
 multidict==6.0.4
 packaging==21.3