Bump toolchain/luet-mtree to 0.0.5

[cOS-cibot]

The first string says, “I think I’ll have a beer quag fulk boorg jdk^CjfdLk jk3s d#f67howe%^U r89nvy~~owmc63^Dz x.xvcu”

[Itxaka]

looks like the test failed for a different reason, luet-mtree logs:

[Wed Jun  9 05:05:01 UTC 2021] Got event image.post.unpack, processing.
[Wed Jun  9 05:05:01 UTC 2021] Got cos-system-0.5.0, continue...
[Wed Jun  9 05:05:01 UTC 2021] Getting docker.io/raccos/releases-opensuse:cos-system-0.5.0.metadata.yaml metadata
[Wed Jun  9 05:05:06 UTC 2021] Finished all checks with no errors

[Itxaka]

In any case, Im bumping the version as part of #251 so this should be closed, I want to manually test this a lot before merging!