GitLab

The 5.4-arm64 build[1] needs a cache size greater than 400M.

[1]: https://gitlab.com/Xenomai/xenomai-hacker-space/-/jobs/1171197811Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>