Bump setuptools from 72.2.0 to 73.0.1 (#1557)

requirements/testing.txt

@@ -8,6 +8,6 @@ pytest-asyncio==0.24.0
 pytest-cov==5.0.0
 pytest-icdiff==0.9
 ruff==0.6.2
-setuptools==72.2.0
+setuptools==73.0.1
 tox==4.18.0
 tox-gh-actions==3.2.0