Bump react-immutable-pure-component from 1.2.3 to 2.2.1

Bumps [react-immutable-pure-component](https://github.com/Monar/react-immutable-pure-component) from 1.2.3 to 2.2.1.
- [Release notes](https://github.com/Monar/react-immutable-pure-component/releases)
- [Commits](https://github.com/Monar/react-immutable-pure-component/compare/v1.2.3...v2.2.1

)

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