Announce: Flatpak 1.10.2 (security update)

[Alexander Larsson]

Available here:
   https://github.com/flatpak/flatpak/releases/tag/1.10.2

$ sha256sum flatpak-1.10.2.tar.xz
db152739d072f8ff299e4e888d8963a1b4538da7b10e0b86525be438f2e1dde4
flatpak-1.10.2.tar.xz

This is a security update which fixes a potential attack where
a flatpak application could use custom formatted .desktop files to
gain access to files on the host system.

Other changes:

* Fix memory leaks
* Some test fixes
* Documentation updates
* G_BEGIN/END_DECLS added to library headers for c++ use
* Fix for X11 cookies on OpenSUSE
* Spawn portal better handles non-utf8 filenames