Bump golang to 1.24.4

What does this MR do?

Bump golang to 1.24.4

Why was this MR needed?

To address CVE-2025-4673

What's the best way to test this MR?

-

What are the relevant issue numbers?

• https://gitlab.com/gitlab-org/gitlab-runner/-/issues/38886
• https://gitlab.com/gitlab-org/gitlab-runner/-/issues/38887
• https://gitlab.com/gitlab-org/gitlab-runner/-/issues/38888
• https://gitlab.com/gitlab-org/gitlab-runner/-/issues/38889