Updated tumbler packages fix security vulnerability

gst-thumbnailer: Add mime type check gxoxfce/tumbler65 desktop-thumbnailer: Guard against null path Fix typo in gthread version gxoxfce/tumbler!14...

MGASA-2022-0439 Updated tumbler packages fix security vulnerability

gst-thumbnailer: Add mime type check gxoxfce/tumbler65 desktop-thumbnailer: Guard against null path Fix typo in gthread version gxoxfce/tumbler!14...