Bump mkdirp from 0.5.1 to 1.0.3 (#12979)

Bumps [mkdirp](https://github.com/isaacs/node-mkdirp) from 0.5.1 to 1.0.3.
- [Release notes](https://github.com/isaacs/node-mkdirp/releases)
- [Changelog](https://github.com/isaacs/node-mkdirp/blob/master/CHANGELOG.md)
- [Commits](https://github.com/isaacs/node-mkdirp/commits/v1.0.3

)

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