Update pytest requirement from ~=8.0 to >=8,<10

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.0.0...9.0.2)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -33,7 +33,7 @@ dev = ["pre-commit>=3.0.0"]
 tests = [
     "pytest-cov >= 6,< 8",
     "pytest-mock ~= 3.14",
-    "pytest ~= 8.0",
+    "pytest >= 8,< 10",
     "ruamel.yaml >= 0.17",
     "python-on-whales ~=0.75",
 ]