mini-SWE-agent v2.4.2

What's Changed

Small release to bump image versions in programbench runner.

• Update: programbench uses v6 images by @klieret in https://github.com/SWE-agent/mini-swe-agent/pull/867

Full Changelog: https://github.com/SWE-agent/mini-swe-agent/compare/v2.4.1...v2.4.2