graphics/kquickimageeditor: Update to 0.6.1

Release notes:

KQuickImageEditor 0.6.1 is a bug fix release. This release includes fixes
for memory leaks in the old editing system, fixes the dragger for the new
editing system's text tool, enables LSAN in CI, changes CMake include paths
and has a fix for an undefined aspectRatio error in the
new editing system's crop tool.