build(medcat-den): CU-869c7zhpv Avoid using newly introduced rules for ruff. (#347)

From ruff 0.15.2 they've added a bunch of new rules that are enabled by default:
https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md

This PR removes these as per the suggestion in the changelog.

Author: mart-r

medcat-den/pyproject.toml

@@ -63,3 +63,7 @@ where = ["src"]
 
 [tool.setuptools.package-data]
 "medcat_den" = ["py.typed"]
+
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F"]
+