Bump anyio from 3.3.3 to 3.3.4 (#1108)

Bumps [anyio](https://github.com/agronholm/anyio) from 3.3.3 to 3.3.4.
- [Release notes](https://github.com/agronholm/anyio/releases)
- [Changelog](https://github.com/agronholm/anyio/blob/master/docs/versionhistory.rst)
- [Commits](agronholm/anyio@3.3.3...3.3.4)

---
updated-dependencies:
- dependency-name: anyio
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]