Bug fixes:
- Return to using the process ID of the Flatpak app in the cgroup name. Using the instance ID in 1.15.11 caused crashes when installing apps, extensions or runtimes that use the "extra data" mechanism, which does not set up an instance ID. (#6009)
a24f870de1096f04c6d6992cef851f8eea5f99f2a389e425e1ea73fbb9c02e3b *flatpak-1.15.12.tar.xz