all: migrate to 1.28.7

[ZiMengSheng]

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Attention: Patch coverage is 47.94953% with 165 lines in your changes are missing coverage. Please review.

Project coverage is 68.57%. Comparing base (877d8fb) to head (7883bea).
Report is 2 commits behind head on main.

Files	Patch %	Lines
pkg/scheduler/frameworkext/scheduler_adapter.go	0.00%	41 Missing ⚠️
pkg/webhook/elasticquota/validating/webhooks.go	0.00%	11 Missing ⚠️
.../frameworkext/eventhandlers/reservation_handler.go	50.00%	4 Missing and 5 partials ⚠️
...heduler/frameworkext/framework_extender_factory.go	0.00%	9 Missing ⚠️
pkg/webhook/elasticquota/mutating/webhooks.go	0.00%	7 Missing ⚠️
pkg/webhook/pod/mutating/webhooks.go	0.00%	7 Missing ⚠️
pkg/webhook/pod/validating/webhooks.go	0.00%	7 Missing ⚠️
pkg/koordlet/qosmanager/framework/context.go	0.00%	5 Missing ⚠️
pkg/webhook/cm/validating/webhooks.go	0.00%	5 Missing ⚠️
pkg/webhook/node/mutating/webhooks.go	0.00%	5 Missing ⚠️
... and 25 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2038      +/-   ##
==========================================
- Coverage   68.74%   68.57%   -0.18%     
==========================================
  Files         423      430       +7     
  Lines       39199    39311     +112     
==========================================
+ Hits        26949    26956       +7     
- Misses       9917    10021     +104     
- Partials     2333     2334       +1     

Flag	Coverage Δ
unittests	68.57% <47.94%> (-0.18%)	⬇️

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[saintube]

For the upgradation of the client-go and Docker image, some compatible issues should be noticed for the koordlet and koord-manager.

[saintube]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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