dep: Move legacy dev-dependencies to dev group

From Poetry 1.2.0, dependencies can be grouped, and Poetry
treats the old dev-dependencies as a virtual dev group, but
poetry2nix doesn't seem to like it after we introduced a new group,
so I just moved the dev-dependencies explicitly to the dev group.

Author: kissgyorgy

pyproject.toml

@@ -31,15 +31,16 @@ lark = "^1.1.2"
 lz4 = "^4.0.0"
 lief = "^0.12.3"
 
+[tool.poetry.group.dev]
+optional = true
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev.dependencies]
 pytest = "^6.2.4"
 pyright = "^0.0.12"
 pre-commit = "^2.15.0"
 pytest-cov = "^3.0.0"
 setuptools-rust = "^1.1.2"
 
-
 [tool.poetry.group.docs]
 optional = true