Outdated dependency in release.yml

[nexrobr]

https://github.com/JonMagon/KDiskMark/blob/master/.github/workflows/release.yml

164: wget https://github.com/probonopd/linuxdeployqt/releases/download/continuous/linuxdeployqt-continuous-x86_64.AppImage

linuxdeployqt is no longer maintained, in favor of https://github.com/probonopd/go-appimage . The dependency should be updated here so as not to introduce any issues related to an abandoned codebase.