v7.3.9
[material-ui][docs] Fix sentence in the All components page (#42336)
[docs] Fix small typo in NumberField page (@arthur-plazanet) (#47888)
[docs] Fix Theme builder video (@oliviertassinari) (#47855)
[docs] Add warning callout to Sync plugin doc (#47511)
[website] Add React PDF Kit as gold sponsor (@rluzists1) (#47905)
[docs] Add Next.js App Router guide for custom classnames (#45852)
[docs-infra] Resolve a few 301s in our docs (#47746)
[material-ui][TablePaginationActions] export TablePaginationActions as new component (#46149)