Move epydoc back to the [test] group (#415)

* Move `epydoc` back to the `[test]` group

* Restore manual install of setuptools/wheel in test workflow

Author: krassowski

.github/workflows/lint.yml

@@ -17,7 +17,6 @@ jobs:
         # https://mesonbuild.com/meson-python/how-to-guides/editable-installs.html#build-dependencies
         # for details.
         pip install meson-python meson ninja pybind11>=2.10.4
-        pip install setuptools wheel # needed for epydoc
         pip install --no-build-isolation -ve . --group lint
     - name: Mypy
       run: |

pyproject.toml

@@ -30,8 +30,6 @@ dependencies = [
     "tomli; python_version<'3.11'",
     "typing_extensions>=4.6; python_version<'3.12'",
     'prompt_toolkit',
-    'epydoc',
-    'wheel', # required by epydoc, but not listed as a dependency
     'platformdirs',
 ]
 [project.urls]
@@ -59,6 +57,9 @@ test = [
     'pytest-json-report',
     'pytest<=8',
     'requests',
+    'epydoc',
+    'wheel', # required by epydoc, but not listed as a dependency
+    'setuptools', # required by epydoc, but not listed as a dependency
 ]
 
 [dependency-groups]