Update pyproject.toml isort profile, dev group header and poetry.lock (#487)

pyproject.toml

@@ -36,7 +36,7 @@ myst-parser = { version = "*", optional = true }
 docutils = { version = ">=0.17", optional = true }
 async-timeout = ">=3.0.0"
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev.dependencies]
 pytest = "*"
 pytest-cov = "*"
 pytest-asyncio = "*"
@@ -56,11 +56,7 @@ speedups = ["orjson", "kasa-crypt"]
 
 
 [tool.isort]
-multi_line_output = 3
-include_trailing_comma = true
-force_grid_wrap = 0
-use_parentheses = true
-line_length = 88
+profile = "black"
 known_first_party = "kasa"
 known_third_party = ["asyncclick", "pytest", "setuptools", "voluptuous"]