chore: dependencies update
chore: dependencies update

- update: `@coreui/coreui` to `^2.1.7`
- update: `@coreui/react` to `^2.1.4`
- update: `bootstrap` to `^4.3.1`
- update: `core-js` to `^2.6.5`
- update: `enzyme` to `^3.9.0`
- update: `enzyme-adapter-react-16` to `^1.9.1`
- update: `prop-types` to `^15.7.2`
- update: `react` to `^16.8.2`
- update: `react-app-polyfill` to `^0.2.1`
- update: `react-dom` to `^16.8.2`
- update: `react-test-renderer` to `^16.8.2`
- update: `reactstrap` to `^7.1.0`
- update: `react-scripts` to `2.1.5`

mrholek/CoreUI-React,mrholek/CoreUI-React