Update OpenAPI version to 3.13.0
Update OpenAPI version to 3.13.0

- Open API version must be bumped too!

zlamalp/perun,mvocu/perun,zoraseb/perun,CESNET/perun,zwejra/perun,zoraseb/perun,zoraseb/perun,mvocu/perun,zlamalp/perun,zwejra/perun,martin-kuba/perun,zlamalp/perun,mvocu/perun,zwejra/perun,mvocu/perun,balcirakpeter/perun,mvocu/perun,zoraseb/perun,balcirakpeter/perun,martin-kuba/perun,martin-kuba/perun,CESNET/perun,CESNET/perun,zoraseb/perun,CESNET/perun,CESNET/perun,balcirakpeter/perun,martin-kuba/perun,martin-kuba/perun,CESNET/perun,zlamalp/perun,mvocu/perun,balcirakpeter/perun,zoraseb/perun,martin-kuba/perun,CESNET/perun,balcirakpeter/perun,zlamalp/perun,zwejra/perun,zwejra/perun,zwejra/perun,balcirakpeter/perun,balcirakpeter/perun,zlamalp/perun,mvocu/perun,zlamalp/perun,martin-kuba/perun