Log Message:
gopls: update to 0.16.1.

This release addresses the following gopls issues:

    golang/go#68116, broken links to dependencies in the new integrated doc viewer.
    golang/go#68169, a crash in package name completion.
    golang/go#68213, a crash when hovering over an interface with an empty type set.
    golang/go#68240, additional telemetry instrumentation to help inform \ 
decisions for gopls@v0.17.0. (Note that this is local instrumentation only; a \ 
separate proposal will be filed to allow collection of this data from users who \ 
have opted in to sharing their telemetry data).