chore: upgrade UBI8 to UBI9 and Go to 1.24 in CI workflows

[xuezhaojun]

Summary

This PR upgrades the CI/CD infrastructure to use UBI9 (Red Hat Universal Base Image 9) instead of UBI8 and updates the Go version to 1.24.

Changes

• Update Go version from 1.22 to 1.24 in chart-upload workflow
• Upgrade base image from ubi8/ubi-minimal to ubi9/ubi-minimal in image build workflows (go-postsubmit and go-release)
• Clean up trailing newline in go-presubmit workflow

Motivation

UBI9 provides security updates, performance improvements, and better long-term support. Go 1.24 includes the latest improvements and security patches for the project.

Test Plan

• Verify CI workflows execute successfully with new UBI9 base image
• Ensure image builds complete without errors for all architectures
• Confirm Go 1.24 compatibility with existing codebase

🤖 Generated with Claude Code

Co-Authored-By: Claude [email protected]

[openshift-ci]

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This pull-request has been approved by: xuezhaojun

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 13.91%. Comparing base (8e60d8d) to head (0782e52).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #242   +/-   ##
=======================================
  Coverage   13.91%   13.91%           
=======================================
  Files          32       32           
  Lines        1717     1717           
=======================================
  Hits          239      239           
  Misses       1460     1460           
  Partials       18       18           

Flag	Coverage Δ
unit	13.91% <ø> (ø)

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