seccomp: Allow 64bit time functions on 32bit systems

These were added to Linux kernel 5.1:

https://lwn.net/ml/linux-kernel/20190110172216.313063-12-arnd@arndb.de/

They are now causing failures on Fedora 34 on 32bit systems (e.g. Raspberry Pi)

(tracker-extract-3:442): Tracker-DEBUG: 16:20:57.646: Extracting metadata for 'file:///media/Music/Less%20Than%20Jake/Portrait%20of%20a%20Cigarette%20Smoker%20at%20Age%2019%20(acoustic).mp3'
(tracker-extract-3:442): Tracker-DEBUG: 16:20:57.647: MIME type guessed as 'audio/mpeg' (from GIO)
(tracker-extract-3:442): Tracker-DEBUG: 16:20:57.649: Loading seccomp rules.
Disallowed syscall "clock_gettime64" caught in sandbox