Merge pull request #621 from cylc/cherry

setup: types-pkg-resources -> types-setuptools (cherry pick of #620)

Author: oliver-sanders

setup.cfg

@@ -103,7 +103,7 @@ tests =
     # https://github.com/pytest-dev/pytest/issues/12263
     pytest>=6,<8.2
     towncrier>=23
-    types-pkg_resources>=0.1.2
+    types-setuptools
     types-requests>2
 all =
     %(hub)s