Bump async-timeout from 4.0.3 to 5.0.0

Bumps [async-timeout](https://github.com/aio-libs/async-timeout) from 4.0.3 to 5.0.0.
- [Release notes](https://github.com/aio-libs/async-timeout/releases)
- [Changelog](https://github.com/aio-libs/async-timeout/blob/master/CHANGES.rst)
- [Commits](aio-libs/async-timeout@v4.0.3...v5.0.0)

---
updated-dependencies:
- dependency-name: async-timeout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,2 +1,2 @@
-async_timeout==4.0.3
+async_timeout==5.0.0
 pydebug==1.0.3