fix: update go-upgrade tool to check patch number (#18252)

[Arshdeep54]

Description

func isSameVersion(a, b *version.Version) bool {
	return a.Segments()[0] == b.Segments()[0] && a.Segments()[1] == b.Segments()[1] && a.Segments()[2] == b.Segments()[2]
}

This isSameVersion function also checks for the patch number.

Related Issue(s)

#18252

Checklist

• "Backport to:" labels have been added if this change should be back-ported to release branches
• If this change is to be back-ported to previous releases, a justification is included in the PR description
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on CI?
• Documentation was added or is not required

Deployment Notes

[vitess-bot]

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[Arshdeep54]

@frouioui @systay Kindly review the PR.

[systay]

@Arshdeep54 Thank you for your contribution!

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 67.52%. Comparing base (efae039) to head (3f5876b).
Report is 18 commits behind head on main.

Files with missing lines	Patch %	Lines
go/tools/go-upgrade/go-upgrade.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #18402      +/-   ##
==========================================
+ Coverage   67.51%   67.52%   +0.01%     
==========================================
  Files        1607     1607              
  Lines      262687   262687              
==========================================
+ Hits       177340   177382      +42     
+ Misses      85347    85305      -42     

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[Arshdeep54]

@systay , can you help me fix the failed CI?