Update version for the next release (v0.39.0)

[meili-bot]

🚀 Enhancements

• feat: hybrid search improvements for v1.8.x (feat: hybrid search improvements for v1.8.x #1647) @mdubus
• Add null to Embedder type (Add null to Embedder type #1646) @amit-ksh
• Add searchCutoffMs index setting (Add searchCutoffMs index setting #1643, Update SearchCutoffMs #1645) @amit-ksh

  client.index('movies').getSearchCutoffMs()
  client.index('movies').updateSearchCutoffMs(150)
  client.index('movies').resetSearchCutoffMs()

⚙️ Maintenance/misc

• Update ESLint, Prettier, TypeScript and fix/improve their configuration files (Update ESLint, Prettier, TypeScript and fix/improve their configuration files #1616) @flevi29
• Fix code style after configuration changes (Fix code style after configuration changes #1638) @brunoocasali

Thanks again to @amit-ksh, @brunoocasali, @curquiza, @flevi29, @mdubus, @meili-bors[bot] ! 🎉

[brunoocasali]

bors merge

[meili-bors]

Build succeeded:

• integration-tests (Node.js 18)
• integration-tests (Node.js 20)
• style-check
• types-check