Bump yarl from 1.9.3 to 1.9.4 (#28)

Bumps [yarl](https://github.com/aio-libs/yarl) from 1.9.3 to 1.9.4.
- [Release notes](https://github.com/aio-libs/yarl/releases)
- [Changelog](https://github.com/aio-libs/yarl/blob/master/CHANGES.rst)
- [Commits](aio-libs/yarl@v1.9.3...v1.9.4)

---
updated-dependencies:
- dependency-name: yarl
  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

@@ -20,4 +20,4 @@ python-json-logger==2.0.7
 PyYAML==6.0.1
 sniffio==1.3.0
 typing_extensions==4.8.0
-yarl==1.9.3
+yarl==1.9.4