fixes optional dependencies

pyproject.toml

@@ -2,7 +2,7 @@
 name = "rocketpy"
 version = "1.2.2"
 description="Advanced 6-DOF trajectory simulation for High-Power Rocketry."
-dynamic = ["dependencies", "optional-dependencies"]
+dynamic = ["dependencies"]
 readme = "README.md"
 requires-python = ">=3.8"
 authors = [
@@ -29,15 +29,26 @@ py-modules = ['rocketpy']
 
 [tool.setuptools.dynamic]
 dependencies = { file = ["requirements.txt"] }
-optional-dependencies.optional = { file = ["requirements-optional.txt"] }
-optional-dependencies.test = { file = ["requirements-tests.txt"] }
 
-[tool.setuptools.optional-dependencies.env_analysis]
-windrose = ">=1.6.8"
-timezonefinder = "*"
-jsonpickle = "*"
-ipython = "*"
-ipywidgets = ">=7.6.3"
+[project.optional-dependencies]
+tests = [ 
+    "pytest", 
+    "pytest-coverage",
+    "black[jupyter]",
+    "flake8-black",
+    "pandas",
+    "numericalunits==1.25",
+    "pylint",
+    "isort"
+]
+
+env_analysis = [ 
+    "windrose>=1.6.8", 
+    "timezonefinder", 
+    "jsonpickle", 
+    "ipython", 
+    "ipywidgets>=7.6.3" 
+]
 
 [tool.black]
 line-length = 88