chore: upgrade go version to 1.24.4

[zhiying-lin]

What type of PR is this?
/kind fix

fix CVE-2025-4673, CVE-2025-22874, CVE-2025-0913

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Requirements:

• run make reviewable for basic local test
• Read and followed fleet-networking's Code of conduct.
• uses conventional commit messages
• includes documentation
• adds unit tests

How has this code been tested

Special notes for your reviewer

[azure-pipelines]

There was an error handling pipeline event e938f0d6-484c-4cd5-8583-d0c6b7bca1e5.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.74%. Comparing base (ef018fe) to head (2c8bb5e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #316      +/-   ##
==========================================
+ Coverage   80.48%   80.74%   +0.26%     
==========================================
  Files          29       29              
  Lines        4161     4161              
==========================================
+ Hits         3349     3360      +11     
+ Misses        647      636      -11     
  Partials      165      165              

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[michaelawyu]

LGTM ;)