v9.3.1
[material-ui][docs] Fix sentence in the All components page (#42336)
[docs][drawer] Clarify clipped AppBar spacing (#48887)
[docs] Link a new theme generator tool (#48847)
[docs-infra] Test HTML validation in broken links checker (#48088)
[website] Update sponsors for July (#48792)
[docs] Fix HTML validation errors (#48107)
[docs] Fix per-page canonical URL and stale SEO link (#48789)
[docs] Clarify third-party script risk in CSP unsafe-inline note (#48787)
[docs] Document Grid direction column removal in v9 upgrade guide (#48880)
[docs] Fix versions page (#48261)
[core] Remove GridLegacy component (#47956)