fix(devices): Avoid spurious writes to device record if nothing has changed
fix(devices): Avoid spurious writes to device record if nothing has changed

TDA/fxa-auth-server,eoger/fxa-auth-server,mozilla/fxa-auth-server,mozilla/fxa-auth-server,TDA/fxa-auth-server,shane-tomlinson/fxa-auth-server,mozilla/fxa-auth-server,TDA/fxa-auth-server,shane-tomlinson/fxa-auth-server,TDA/fxa-auth-server,eoger/fxa-auth-server,mozilla/fxa-auth-server,shane-tomlinson/fxa-auth-server,shane-tomlinson/fxa-auth-server,eoger/fxa-auth-server,eoger/fxa-auth-server