Pin libsbgnpy

Author: pgleeson

setup.cfg

@@ -58,7 +58,7 @@ install_requires =
 	antimony>=2.13.1
 	pyneuroml>=0.7.1
 	libcellml>=0.3.104
-	libsbgnpy>=0.2.2
+	libsbgnpy==0.2.2
 	pybiopax>=0.1.2
 	ipython>=8.4.0
 	nbformat>=5.4.0