uploader: ignore bad character encodings for older bootloaders
uploader: ignore bad character encodings for older bootloaders

this prevents the uploader from throwing an exception with older
bootloaders

dagar/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,acfloria/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,dagar/Firmware,mcgill-robotics/Firmware,dagar/Firmware,PX4/Firmware,darknight-007/Firmware,jlecoeur/Firmware,darknight-007/Firmware,darknight-007/Firmware,krbeverx/Firmware,jlecoeur/Firmware,dagar/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,acfloria/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,darknight-007/Firmware,jlecoeur/Firmware,Aerotenna/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,mcgill-robotics/Firmware,darknight-007/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,jlecoeur/Firmware,krbeverx/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,dagar/Firmware,dagar/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,PX4/Firmware,acfloria/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,Aerotenna/Firmware