DEPS: Bump some code style check dependencies
is there a reason not to bump mypy?  looks like we're on 1.4.1 while 1.7.1 is out (OK to call that out of scope) Thanks @mroeschke!

> is there a reason not to bump mypy? looks like we're on 1.4.1 while 1.7.1 is out (OK to call that out of scope)

It requires more changes, see the first commit of #56493
