Bump software version to 3.0

Updates the bootloader software version constant from 2.4 to 3.0.

Author: vanvught

bootloader-tftp/include/software_version.h

@@ -26,6 +26,6 @@
 #ifndef SOFTWARE_VERSION_H_
 #define SOFTWARE_VERSION_H_
 
-constexpr char kSoftwareVersion[] = "2.4";
+constexpr char kSoftwareVersion[] = "3.0";
 
 #endif // SOFTWARE_VERSION_H_