Add setuptools to requirements-dev.txt (#4282)

requirements-dev.txt

@@ -1,6 +1,7 @@
 pre-commit  # needed for pre-commit hooks in the git commit command
 
 # For the test suite
+setuptools  # required for test_meta
 pytest==8.2.0
 pytest-asyncio==0.21.2  # needed because pytest doesn't come with native support for coroutines as tests
 pytest-xdist==3.6.1  # xdist runs tests in parallel