Bump test from 1.21.6 to 1.21.7 in /device_doctor (#2268)
Bump test from 1.21.6 to 1.21.7 in /device_doctor (#2268)


flutter/cocoon,flutter/cocoon,flutter/cocoon,flutter/cocoon,flutter/cocoon,flutter/cocoon,flutter/cocoon,flutter/cocoon,flutter/cocoon