Bump yarl from 1.19.0 to 1.20.0 (#1439)

Bumps [yarl](https://github.com/aio-libs/yarl) from 1.19.0 to 1.20.0.
- [Release notes](https://github.com/aio-libs/yarl/releases)
- [Changelog](https://github.com/aio-libs/yarl/blob/master/CHANGES.rst)
- [Commits](aio-libs/yarl@v1.19.0...v1.20.0)

---
updated-dependencies:
- dependency-name: yarl
  dependency-version: 1.20.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

demos/moderator_bot/requirements-dev.txt

@@ -20,5 +20,5 @@ scipy==1.15.2
 six==1.17.0
 slack_sdk==3.35.0
 urllib3==2.4.0
-yarl==1.19.0
+yarl==1.20.0
 zipp==3.21.0