fix kustomize manager tag

[celenechang]

What does this PR do?

Missed this update following the release of 1.7.0

Motivation

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Additional Notes

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Minimum Agent Versions

Are there minimum versions of the Datadog Agent and/or Cluster Agent required?

• Agent: vX.Y.Z
• Cluster Agent: vX.Y.Z

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Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.97%. Comparing base (70315d8) to head (ca96f2e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1281   +/-   ##
=======================================
  Coverage   54.97%   54.97%           
=======================================
  Files         243      243           
  Lines       27986    27986           
=======================================
  Hits        15386    15386           
  Misses      11730    11730           
  Partials      870      870           

Flag	Coverage Δ
unittests	54.97% <ø> (ø)

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