Merge pull request numpy#27508 from charris/fix-nightly-builds

MAINT: Pin setuptools for testing [wheel build]

Author: charris

requirements/test_requirements.txt

@@ -1,8 +1,7 @@
 Cython
 wheel==0.38.1
-#setuptools==65.5.1 ; python_version < '3.12'
-#setuptools         ; python_version >= '3.12'
-setuptools
+setuptools==65.5.1 ; python_version < '3.12'
+setuptools         ; python_version >= '3.12'
 hypothesis==6.104.1
 pytest==7.4.0
 pytz==2023.3.post1