We're starting to prepare a new release. The first step is to use
go1.17.6 in the following places:
1. everywhere we define the version of Go in this tree;
2. when we're building for Android (using ooni/go);
3. in our ooni/oohttp fork of Go net/http standard library.
Reference issue: https://github.com/ooni/probe/issues/1845
ec98500ba7