build(deps-dev): update pytest requirement from >=8.3.5 to >=9.1.1

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@8.3.5...9.1.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.1.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -43,7 +43,7 @@ select = [
 
 [dependency-groups]
 dev = [
-    "pytest>=8.3.5",
+    "pytest>=9.1.1",
     "pytest-cov>=7.1.0",
     "python-dotenv>=1.0.1",
     "ruff>=0.15.10",