chore(deps): bump sniffio from 1.3.0 to 1.3.1 (#241)

Bumps [sniffio](https://github.com/python-trio/sniffio) from 1.3.0 to 1.3.1.
- [Commits](python-trio/sniffio@v1.3.0...v1.3.1)

---
updated-dependencies:
- dependency-name: sniffio
  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>

requirements.txt

@@ -13,5 +13,5 @@ python-bidi==0.4.2; python_version >= "3.6"
 ratelimiter==1.2.0.post0
 rfc3986==1.5.0; python_version >= "3.7"
 six==1.16.0; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.3.0" and python_version >= "3.6"
-sniffio==1.3.0; python_full_version >= "3.6.2" and python_version >= "3.7"
+sniffio==1.3.1; python_full_version >= "3.6.2" and python_version >= "3.7"
 toml==0.10.2; (python_version >= "2.6" and python_full_version < "3.0.0") or (python_full_version >= "3.3.0")