build(deps-dev): 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...9.0.0)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -37,7 +37,7 @@ dev = [
     "pytest-random-order~=1.1",
     "pytest-timeout~=2.2",
     "pytest-xvfb~=3.0",
-    "pytest~=8.0",
+    "pytest>=8,<10",
     "pytest-cov~=6.1.1",
     "watchdog~=6.0",
     "pre_commit~=4.2",