Adds Python version for Sonar

Signed-off-by: Martin Melik-Merkumians <melik-merkumians@acin.tuwien.ac.at>

sonar-project.properties

@@ -1,5 +1,6 @@
 sonar.projectKey=EIPStackGroup_OpENer
 sonar.organization=eipstackgroup
+sonar.python.version=3.8
 sonar.language=c
 sonar.c.file.suffixes=.c,.h
 sonar.cpp.file.suffixes=.cc,.cpp,.cxx,.c++,.hh,.hpp,.hxx,.h++,.ipp