Bump pytest from 6.2.5 to 8.0.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 to 8.0.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.2.5...8.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

requirements-dev.txt

@@ -1,7 +1,7 @@
 paho-mqtt>=1.5.0
 requests>=2.19.1
 aiohttp[speedups]>=3.7.4.post0
-pytest==6.2.5
+pytest==8.0.0
 pytest-html==3.1.1
 pytest-cov==2.12.1
 pytest-json-report==1.4.0