Update pytest-asyncio requirement from >=0.21.0 to >=1.4.0 (#16)

Updates the requirements on [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.21.0...v1.4.0)

---
updated-dependencies:
- dependency-name: pytest-asyncio
  dependency-version: 1.4.0
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-dev.txt

@@ -3,7 +3,7 @@
 # Testing framework
 pytest>=9.1.1
 pytest-cov>=4.0.0
-pytest-asyncio>=0.21.0
+pytest-asyncio>=1.4.0
 
 # Code quality
 pylint>=2.15.0