sbmlteam/libsbml: Release 5.19.5

This prerelease, updates the build process to use cmake import libraries throughout. It ensures compatibility with latest version of expat, libxml and xerces-c to mitigate denial of service attacks. Spatial is updated to solve an issue with validation.LibSBML is a native library for reading, writing and manipulating files and data streams containing the Systems Biology Markup Language (SBML). It offers language bindings for C, C++, C#, Java, JavaScript, MATLAB, Perl, PHP, Python, R and Ruby