[website] Add Zeeshan to About Us page under Community contributors section

[ZeeshanTamboli]

Preview: https://deploy-preview-45026--material-ui.netlify.app/about/

I have even contributed to MUI X product in the start, so I mentioned that as well.

[mui-bot]

Netlify deploy preview

https://deploy-preview-45026--material-ui.netlify.app/

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@mui/joy: parsed: +Infinity% , gzip: +Infinity%
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@mui/joy/Menu: parsed: +Infinity% , gzip: +Infinity%
Tooltip: parsed: +Infinity% , gzip: +Infinity%
SwipeableDrawer: parsed: +Infinity% , gzip: +Infinity%
Alert: parsed: +Infinity% , gzip: +Infinity%
TabList: parsed: +Infinity% , gzip: +Infinity%
SpeedDial: parsed: +Infinity% , gzip: +Infinity%
Pagination: parsed: +Infinity% , gzip: +Infinity%
LoadingButton: parsed: +Infinity% , gzip: +Infinity%
Popover: parsed: +Infinity% , gzip: +Infinity%
Drawer: parsed: +Infinity% , gzip: +Infinity%
PaginationItem: parsed: +Infinity% , gzip: +Infinity%
and 271 more changes

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