Flatpak 1.17.7

Enhancements:

• Add the new permission conditionals has-usb-device and has-usb-portal to allow apps to drop --device=all and --device=usb permissions (#6560)
• Always send the Flatpak-Upgrade-From header when updating instead of freshly installing, to improve the quality of statistics (#6626)
• Improve how the absence of the system repo is handled (#6621)
• Changes to repos are now more atomic which helps to avoid them being in an invalid state. This could be observed when importing the GPG key failed, because the system clock was wrong. (#6547)
• A function to report the age of the configuration was added to libflatpak, which will help GNOME Software to prevent unnecessary work (#6532)
• Improvements to the build system (#6614, #6610)
• Improve various tests (#6604, #6606, #6619, #6617, #6605, #6625)
• Translation updates: tr (#6629), ‎zh_CN (#6630)

Bug fixes:

• Fix a regression in handling of the fallback-x11 permission, which was affecting overrides from Flatseal (#6632)
• Fix a memory leak in the Flatpak portal (#6613)
• Install SELinux configuration files to the right directory (#6622)
• Silence wrong lseek() errors when creating sub-sandboxes (#6609)