ci: update action step-security/harden-runner from c6295a6 to 6c439dc

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence	OpenSSF
step-security/harden-runner	v2.11.1 -> v2.12.2

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Release Notes

step-security/harden-runner (step-security/harden-runner)

v2.12.2

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What's Changed

Added HTTPS Monitoring for additional destinations - *.githubusercontent.com
Bug fixes:

• Implicitly allow local multicast, local unicast and broadcast IP addresses in block mode
• Increased policy map size for block mode

Full Changelog: step-security/harden-runner@v2...v2.12.2

v2.12.1

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What's Changed

• Detection capabilities have been upgraded to better recognize attempts at runner tampering. These improvements are informed by real-world incident learnings, including analysis of anomalous behaviors observed in the tj-actions and reviewdog supply chain attack.
• Resolved an issue where the block policy was not enforced correctly when the GitHub Actions job was running inside a container on a self-hosted VM runner.

Full Changelog: step-security/harden-runner@v2...v2.12.1

v2.12.0

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What's Changed

1. A new option, disable-sudo-and-containers, is now available to replace the disable-sudo policy, addressing Docker-based privilege escalation (CVE-2025-32955). More details can be found in this blog post.

2. New detections have been added based on insights from the tj-actions and reviewdog actions incidents.

Full Changelog: step-security/harden-runner@v2...v2.12.0

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

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