bump golang.org/x/tools to v0.16.1

[zhzhuang-zju]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
Bumping tools to include the fix for a nil pointer deref error in go/types. See golang/go#64812 for more details.
This fix may be needed for when we bump to go1.22. See kubernetes/kubernetes#122412 for more details.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

none

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (715d46c) 51.87% compared to head (f2e02a4) 51.87%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4473      +/-   ##
==========================================
- Coverage   51.87%   51.87%   -0.01%     
==========================================
  Files         243      243              
  Lines       24179    24179              
==========================================
- Hits        12543    12542       -1     
- Misses      10954    10955       +1     
  Partials      682      682              

Flag	Coverage Δ
unittests	51.87% <ø> (-0.01%)	⬇️

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[liangyuanpeng]

This is a fix for golang 1.22 and karmada currently uses 1.20, but a version upgrade will not hurt.

[RainbowMango]

This fix may be needed for when we bump to go1.22. See kubernetes/kubernetes#122412 for more details.

Does that mean the golang.org/x/tools before v0.16.1 is not compatible with go1.22?

[zhzhuang-zju]

Does that mean the golang.org/x/tools before v0.16.1 is not compatible with go1.22?

They will cause panic in certain scenarios, but whether Karmada will encounter these scenarios remains to be known through experiments.

[RainbowMango]

The root cause is the implementation of SizeFor has been adjusted in Go1.22, which is not compatible with golang.org/x/tools before v0.16.1.

See Go1.22 release notes:

The implementation of SizesFor has been adjusted to compute the same type sizes as the compiler when the compiler argument for SizesFor is "gc". The default Sizes implementation used by the type checker is now types.SizesFor("gc", "amd64").

[RainbowMango]

/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: liangyuanpeng, RainbowMango

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