1.4.6 - fix regression of frontend using chat models with togetherai

What's Changed

• Bump gptscript version by @milosgajdos in #624
• fix(scheduler): add background goroutine to check for dead runners by @philwinder in #623
• refactor(image): fix size of images by @philwinder in #626
• Use fork of gptscript and update prompt to user by @milosgajdos in #625

Full Changelog: 1.4.5...1.4.6