Update dependency react-native-share to v1.2.1

Thalia Technicie
2019-05-30T11:16:33+02:00

This MR contains the following updates: | Package | Type | Update | Change | References | |---|---|---|---|---| | react-native-share | dependencies | patch | [`1.2.0` -> `1.2.1`](https://diff.intrinsic.com/react-native-share/1.2.0/1.2.1...

react-native-share | dependencies | patch | 1.2.0 -> 1.2.1 | source