build(deps-dev): bump async-timeout from 4.0.2 to 4.0.3 (#746)

Bumps [async-timeout](https://github.com/aio-libs/async-timeout) from 4.0.2 to 4.0.3.
- [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@v4.0.2...v4.0.3)

---
updated-dependencies:
- dependency-name: async-timeout
  dependency-type: direct:development
  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>

Author: dependabot[bot]

demos/moderator_bot/requirements-dev.txt

@@ -1,7 +1,7 @@
 -i https://pypi.org/simple/
 aiohttp==3.8.5
 aioslacker==0.0.11
-async-timeout==4.0.2
+async-timeout==4.0.3
 atomicwrites==1.4.1
 attrs==23.1.0
 certifi==2023.7.22