[SpeedDial] Move from lab to core

[mbrookes]

Breaking changes

• [SpeedDial] Move the component from the lab to the core. The component will become stable.

  -import SpeedDial from '@material-ui/lab/SpeedDial';
  -import SpeedDialAction from '@material-ui/lab/SpeedDialAction';
  -import SpeedDialIcon from '@material-ui/lab/SpeedDialIcon';
  +import SpeedDial from '@material-ui/core/SpeedDial';
  +import SpeedDialAction from '@material-ui/core/SpeedDialAction';
  +import SpeedDialIcon from '@material-ui/core/SpeedDialIcon';

[mui-pr-bot]

@material-ui/core: parsed: 0.00% 😍, gzip: -0.14% 😍
@material-ui/lab: parsed: +0.38% , gzip: +0.50%

Details of bundle changes

Generated by 🚫 dangerJS against d9b1df3

[oliviertassinari]

The change seems to break the CI on the next branch. I haven't looked closer. I have rerun the CI for 8ea6bbf (before #22743) and 814fb60 (#22743). The first one passes, while the second fails.
It's to be noted that we don't run code coverage on the tests that are in the lab.