feat: update dgiot_b47

feat: update 4.8.9

update v4.8.8

feat: update v4.8.7

feat: update v4.8.6

feat: update v4.8.5

Merge branch 'master' of github.com:dgiot/dgiot

tag 4.8.3

Update v4.8.2

updata v4.8.1