chore(deps-dev): Update anyio requirement from ^3.6.1 to >=3.6.1,<5.0.0

Updates the requirements on [anyio](https://github.com/agronholm/anyio) to permit the latest version.
- [Release notes](https://github.com/agronholm/anyio/releases)
- [Changelog](https://github.com/agronholm/anyio/blob/master/docs/versionhistory.rst)
- [Commits](agronholm/anyio@3.6.1...4.0.0)

---
updated-dependencies:
- dependency-name: anyio
  dependency-type: direct:development
...

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

pyproject.toml

@@ -16,7 +16,7 @@ pytest = "^7.1.3"
 pytest-cov = ">=3,<5"
 pytest-mock = "^3.8.2"
 mypy = ">=0.971,<2.0"
-anyio = {extras = ["trio"], version = "^3.6.1"}
+anyio = {extras = ["trio"], version = ">=3.6.1,<5.0.0"}
 tox = ">=3.26,<5.0"
 ruff = ">=0.0.284,<0.0.287"