Announce: Flatpak 1.8.2

[Alexander Larsson]

Available here: https://github.com/flatpak/flatpak/releases/tag/1.8.2

Changes in 1.8.2
================

 * Added validation of collection id settins for remotes
 * Fix seccomp filters on s390
 * Robustness fixes to the spawn portal
 * Fix support for masking update in the system installation
 * Better support for distros with uncommon models of merged /usr
 * Cache responses from localed/AccountService
 * Fix hangs in cases where xdg-dbus-proxy fails to start
 * Fix double-free in cups socket detection
 * OCI authenticator now doesn't ask for auth in case of http errors

$ sha256sum flatpak-1.8.2.tar.xz 
7926625df7c2282a5ee1a8b3c317af53d40a663b1bc6b18a2dc8747e265085b0  flatpak-1.8.2.tar.xz