Bump golang.org/x/tools

[imjasonh]

Supercedes #1197

(dependabot isn't smart enough to handle our k8schain sub-module depending on the main ggcr module)

go get -u golang.org/x/tools
go mod tidy
go mod vendor
cd pkg/authn/k8schain
go mod download golang.org/x/tools

[codecov-commenter]

Codecov Report

Merging #1201 (07ad28d) into main (c75901c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1201   +/-   ##
=======================================
  Coverage   74.76%   74.76%           
=======================================
  Files         111      111           
  Lines        8008     8008           
=======================================
  Hits         5987     5987           
  Misses       1441     1441           
  Partials      580      580           

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