Add pynose to test requirements

- Replaces nose

tox.ini

 [tox]
-envlist=py37, py38, py39, py310, py311
+envlist=py37, py38, py39, py310, py311, py312
 skip_missing_interpreters = true
 
 [testenv]
 deps = .
-    nose
+    pynose
     pytest
     pytest-cov
     jsonschema>=4.4.0
+    setuptools
 commands=py.test --cov=caosdb -vv {posargs}
 
 [flake8]