remove tensorflow upper limit 2.16 because it keeps us from supporting python 3.12 (refs #873)

Author: cwmeijer

setup.cfg

@@ -53,7 +53,7 @@ install_requires =
     pandas
     torch <=2.3.1  # this is temporary, see #829
     # tf and tfprob are required but not declared by onnx_tf
-    tensorflow >= 2.12,<2.16
+    tensorflow >= 2.12
     tensorflow_probability <0.24
     # https://setuptools.pypa.io/en/latest/userguide/datafiles.html#accessing-data-files-at-runtime
     importlib_resources;python_version<'3.10'