[docs] Improve v5.3.0 release notes

[cherniavskii]

Fixes #3682 (comment)

I'll update the release page as well

[oliviertassinari]

A different point. Considering that we use the GitHub release page as the main entry point for the release (what we link in our outbound messages, e.g. https://twitter.com/MUI_hq/status/1485637779874852869). Shouldn't we add a link to https://mui.com/blog/introducing-the-row-grouping-feature/ in the release page?

[cherniavskii]

A different point. Considering that we use the GitHub release page as the main entry point for the release (what we link in our outbound messages, e.g. https://twitter.com/MUI_hq/status/1485637779874852869). Shouldn't we add a link to https://mui.com/blog/introducing-the-row-grouping-feature/ in the release page?

Sure, why not

[mui-bot]

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	147.7	385.6	210.3	223.46	85.523
Sort 100k rows	ms	292.2	670	591.9	535.16	131.577
Select 100k rows	ms	150.6	289.2	200.4	216.4	46.511
Deselect 100k rows	ms	119.9	219.5	179.8	178.7	33.336

Generated by 🚫 dangerJS against 9ae62d1

[cherniavskii]

Updated release notes to reflect the changes