Bump pytest from 8.4.2 to 9.0.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.4.2 to 9.0.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.4.2...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -9,7 +9,7 @@ readme = "README.md"
 python = "^3.11"
 
 [tool.poetry.group.dev.dependencies]
-pytest = "^8.4.2"
+pytest = "^9.0.0"
 jupyter = "~=1.1.0"
 black = { extras = ["jupyter"], version = "~25.9.0" }
 flake8 = "^7.3.0"