Pre-release 1.12.0.55

What's Changed

• workflows: add arm64 target to the appimage build matrix by @loathingKernel in #633
• project: remove maximum pyside6 version cap by @loathingKernel in #658
• Add arm64 packaging workflows for Windows and Linux by @loathingKernel in #659
• fixup! workflows: add arm64 windows nuitka builds by @loathingKernel in #660
• workflows: go back to not marking pre-releases as latest by @loathingKernel in #661
• LoginDialog: show failure as reported by legendary when trying to log in by @loathingKernel in #665
• Improve DLC handling during [un]install by @loathingKernel in #666
• build(deps): bump actions/upload-artifact from 5 to 6 by @dependabot[bot] in #667
• build(deps): bump actions/download-artifact from 6 to 7 by @dependabot[bot] in #668
• Reduce memory requirements for steam app id completion by @loathingKernel in #669
• Add achievements in game details by @loathingKernel in #670
• RareGame: check for achievements using the app's namespace by @loathingKernel in #671
• Enable use_signed_urls by default when installing by @loathingKernel in #673
• Refactor how signals are connected to lambdas to avoid memory leaks by @loathingKernel in #674

Full Changelog: 1.12.0...1.12.0.55