Upgrade MusicBrainz Solr major version to 4 (Apache Solr 9)

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    • Type: Task
    • Resolution: Fixed
    • Priority: Normal
    • 2025-05-29-solr9
    • None

      MusicBrainz mirrors and development setup are still running Solr 7 while Solr 9 is powering musicbrainz.org since last year.

      It mainly requires supporting the new Solr 8.9+ backup format, and initiliazing SolrCloud collections in Docker.

            Assignee:
            yvanzo
            Reporter:
            yvanzo
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                Version Package
                2025-05-29-solr9