Fix old style poetry groups

pyproject.toml

@@ -45,7 +45,10 @@ pendulum = "^2.1.2"
 trafilatura = "^1.6.3"
 django-imagekit = "^5.0.0"
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev]
+optional = true
+
+[tool.poetry.group.dev.dependencies]
 Werkzeug = "2.0.3"
 black = "^22.3"
 coverage = "^7.0.5"
@@ -57,7 +60,6 @@ pytest-django = "^4.5.2"
 pytest-flake8 = "^1.1"
 pytest-isort = "^3.0"
 pytest-runner = "^6.0"
-pytest-selenium = "^2.0.1"
 time-machine = "^2.9.0"
 types-pytz = "^2022.1"
 types-requests = "^2.27"