build(deps-dev): update python-dotenv requirement

Updates the requirements on [python-dotenv](https://github.com/theskumar/python-dotenv) to permit the latest version.
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.0.1...v1.2.2)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-version: 1.2.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -45,7 +45,7 @@ select = [
 dev = [
     "pytest>=9.1.1",
     "pytest-cov>=7.1.0",
-    "python-dotenv>=1.0.1",
+    "python-dotenv>=1.2.2",
     "ruff>=0.15.10",
 ]