Update material-ui monorepo to v5.15.21

This MR contains the following updates:

Package	Type	Update	Change
@mui/icons-material (source)	dependencies	patch	5.15.20 -> 5.15.21
@mui/material (source)	dependencies	patch	5.15.20 -> 5.15.21

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Release Notes

mui/material-ui (@​mui/icons-material)

v5.15.21

Compare Source

Jun 28, 2024

A big thanks to the 7 contributors who made this release possible.

@mui/material@5.15.21

• [Autocomplete] Fix renderOption props type (@​DiegoAndai) (#​42709) @​DiegoAndai
• [Stepper] Generate class for nonLinear prop (@​alexismo) (#​42677) @​alexismo

Docs

• Use new email for sponsoring @​oliviertassinari
• Fix 301 links (@​alexfauquette) (#​42700) @​alexfauquette
• [material-ui][Select] Fix the SelectAutoWidth demo menu item value (@​Danielkhakbaz) (#​42696) @​Danielkhakbaz
• [material-ui][Autocomplete] Fix more React 18.3 key spread warnings in demos (#​42766) @​wbt
• [material-ui] Fix sign in side image (#​42708) @​zanivan
• [website] Add Ale to team (#​42769) @​alelthomas

Core

• [core] Cherry pick pnpm updates (#​42763) @​DiegoAndai
• [website] Add Armin to the team members (@​arminmeh) (#​42681) @​arminmeh
• [website] Open Staff Engineer role for Pigment CSS (@​mnajdova) (#​42669) @​mnajdova

All contributors of this release in alphabetical order: @​alexfauquette, @​alexismo, @​arminmeh, @​Danielkhakbaz, @​DiegoAndai, @​mnajdova, @​oliviertassinari

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