build(pyproject): remove importlib_metadata from dependencies

Signed-off-by: David Wallace <david.wallace@tu-darmstadt.de>

Author: MyPyDavid

pyproject.toml

@@ -55,7 +55,6 @@ dependencies = [
   "django-widget-tweaks>=1.5,<2.0",
   "djangorestframework>=3.15,<4.0",
   "drf-extensions>=0.7.1,<1.0",
-  "importlib_metadata<8.7.0",  # upstrem problem, see https://github.com/python/importlib_metadata/issues/506
   "iso8601>=2.0,<3.0",
   "markdown>=3.4,<4.0",
   "packaging>=23.2,<25.0",