Update yarl requirement from <1.15.6,>=1.8 to >=1.8,<1.16.1

Updates the requirements on [yarl](https://github.com/aio-libs/yarl) to permit the latest version.
- [Release notes](https://github.com/aio-libs/yarl/releases)
- [Changelog](https://github.com/aio-libs/yarl/blob/master/CHANGES.rst)
- [Commits](aio-libs/yarl@v1.8.0...v1.16.0)

---
updated-dependencies:
- dependency-name: yarl
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -39,4 +39,4 @@ tablib<3.6.0
 url-normalize>=1.4.3,<=1.4.3
 uuid6>=2023.5.2,<=2024.7.10
 whitenoise>=5.0,<6.8.0
-yarl>=1.8,<1.15.6
+yarl>=1.8,<1.16.1