Bump ZarrReader to 0.5.2 and omero-server to 5.6.12

[dominikl]

See title.

[dominikl]

Deployed on idr-testing. (/cc @sbesson )

[sbesson]

Deployment changes look good to me. From this morning's IDR meeting, I understand the goal is to have this deployed onto idr-testing alongside the image-region micro-service with the same version of ZarrReader for a new round of testing.

At the code level, this raises the question of whether the micro-service addition will come as a separate PR and be included here. Note that from an deployment perspective, it should be also possible to update prod122 with these changes first and schedule the integration of the micro-service at a later date.

[sbesson]

The following playbooks idr-omero.yml, idr-omero-readonly.yml and idr-omero-web.yml have been successfully executed against prod122 upgrading the server and web environments as required.

Note that as part of this action, the PostgreSQL configuration file was "downgraded" to the state installed by the ome.postgresql:5.4.0 role. @khaledk2 manually added effective_cache_size = 24GB to the configuration file which was the primarily change from the CentOS 7 -> Rocky Linux 9 upgraded. Mid-term, this should be addressed properly by completing the work on #424.