Unpin black and isort dev requirements

Currently nothing will change because:
- Newer black requires packaging>=22.0
- Newer isort requires Python>=3.8

pyproject.toml

@@ -115,13 +115,13 @@ s3fs = "^2023.1.0"
 
 [tool.poetry.group.dev.dependencies]
 ase = ">=3.18.1"
-black = "^22.1.0"
+black = "*"
 codespell = "*"
 cwltest = "*"
 darker = "*"
 fluent-logger = "*"
 httpx = "*"
-isort = "^5.10.1"
+isort = "*"
 lxml = "!=4.2.2"
 markdown-it-reporter = "*"
 myst-parser = "*"