Bump version to 1.7.3
Bump version to 1.7.3

sawatani/Cordova-Plugin-Crashlytics,sawatani/Cordova-Plugin-Crashlytics,fathens/Cordova-Plugin-Crashlytics,sawatani/Cordova-Plugin-Crashlytics,sawatani/Cordova-Plugin-Crashlytics,fathens/Cordova-Plugin-Crashlytics,fathens/Cordova-Plugin-Crashlytics,sawatani/Cordova-Plugin-Crashlytics,fathens/Cordova-Plugin-Crashlytics,fathens/Cordova-Plugin-Crashlytics