version: bump to 5.13
This fixes the version numbering ordering between master
and
release
.
This was missed for RC1 and planned for RC2, but missed there as well. The superbuild now sees the discrepency and gets confused about the mismatch due to RC2's tag being properly visible despite RC1 being reachable. It would have happened for RC1 except for this Git bug:
https://lore.kernel.org/git/ZNffWAgldUZdpQcr@farprobe/T/#u