ci: fix stale GOROOT used by client-gen

[spacewander]

Fix #684

[spacewander]

Generating clientset at mosn.io/htnn/types/pkg/client/clientset
I0819 03:10:19.251289    2489 parse.go:383] importPackage mosn.io/htnn/types/apis/v1
I0819 03:10:19.251327    2489 parse.go:330] addDir mosn.io/htnn/types/apis/v1
I0819 03:10:19.251735    2489 parse.go:[40](https://github.com/mosn/htnn/actions/runs/10446445403/job/28923873135?pr=687#step:8:41)4] unable to import "mosn.io/htnn/types/apis/v1": go/build: go list mosn.io/htnn/types/apis/v1: fork/exec /opt/hostedtoolcache/go/1.21.12/x64/bin/go: no such file or directory

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.24%. Comparing base (667f07d) to head (accfcac).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #687      +/-   ##
==========================================
+ Coverage   88.18%   88.24%   +0.05%     
==========================================
  Files         119      119              
  Lines        5834     5834              
==========================================
+ Hits         5145     5148       +3     
+ Misses        498      495       -3     
  Partials      191      191              

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