Bump arsenal to 8.5.6 to support V2 replication bucket metadata

[maeldonn]

Align with the arsenal version cloudserver ships. Arsenal >= 8.4.7 writes
bucket replication metadata in the V2 (multi-destination CRR) format
without the deprecated top-level destination. Arsenal 8.2.28 asserted that
field unconditionally and crashed utapi when reading such buckets.

Issue: UTAPI-124

[bert-e]

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[bert-e]

Waiting for approval

The following approvals are needed before I can proceed with the merge:

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• 2 peers

[maeldonn]

@leif-scality I think we should target a new development/8.3 branch for this. What do you think?

[SylvainSenechal]

@leif-scality I think we should target a new development/8.3 branch for this. What do you think?

ye can

[benzekrimaha]

LGTM, well done

[leif-scality]

So this PR will make utapi not compatible with cloudserver 9.3 and previous versions? Only cloudserver 9.4 will work after this? Maybe we should do a development/8.3

@nicolas2bert

[leif-scality]

So this PR will make utapi not compatible with cloudserver 9.3 and previous versions? Only cloudserver 9.4 will work after this? Maybe we should do a development/8.3

@nicolas2bert

This fixed the integration problem
Federation build: https://github.com/scality/Federation/pull/6993
Green Integration: https://github.com/scality/Integration/actions/runs/30082259417