Update pytest requirement from ~=8.3 to ~=9.0

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@8.3.0...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

@@ -95,7 +95,7 @@ docs = [
 tests = [
     "tox~=4.24",
     "mypy~=1.15",
-    "pytest~=8.3",
+    "pytest~=9.0",
     "codecov~=2.1",
     "coverage~=7.6",
     "pytest-cov~=6.0",