[datadog-operator] Update stable agent to v7.77.2

[gabedos]

What does this PR do?

A brief description of the change being made with this pull request.

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

Describe your test plan

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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
• All commits are signed (see: signing commits)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.24%. Comparing base (a350a29) to head (1904c9a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2860   +/-   ##
=======================================
  Coverage   39.24%   39.24%           
=======================================
  Files         314      314           
  Lines       27288    27288           
=======================================
  Hits        10708    10708           
  Misses      15792    15792           
  Partials      788      788           

Flag	Coverage Δ
unittests	39.24% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
pkg/images/images.go	97.58% <ø> (ø)

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