API endpoints changes update

• Changes to MetadataSession.search_brief_bibs method due to /brief-bibs endpoint changes:
  • removed deprecated argument heldBy
  • added groupVariantRecord and preferredLanuage argument
  • modified groupRelatedEditions to allow boolean arguments
• Changes to MetadataSession.search_general_holdings method due to API changes:
  • added following arguements: holdingsAllVariantRecords, preferredLanguage
  • removed deprecated heldBy argument
• Changes to MetadataSession.search_brief_bib_other_editions:
  • added deweyNumber, datePublished, heldByGroup, heldBySymbol,
    heldByInstitutionId, inLanguage, inCatalogLanguage, materialType,
    catalogSource, itemType, itemSubType, retentionCommitments,
    spProgram, topic, subtopic, audience, content, openAccess,
    peerReviewed, facets, groupVariantRecords, preferredLanguage,
    and orderBy.