dependabot-pip: update pytest requirement from ^8.3.4 to >=8.3.4,<10.0.0 (#21)

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@8.3.4...9.0.3)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -27,7 +27,7 @@ Django = ">=4,<6"
 # =============================================================================
 
 [tool.poetry.group.dev.dependencies]
-pytest = "^8.3.4"           # Framework for testing
+pytest = ">=8.3.4,<10.0.0"           # Framework for testing
 pytest-cov = ">=6.1.1,<8.0.0"       # Code coverage for tests
 black = "^24.8.0"           # Code formatter
 flake8 = "^7.2.0"           # Linter for code quality