20190617153038: Bump @types/jest from 24.0.13 to 24.0.15
Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 24.0.13 to 24.0.15. - [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases) - [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/jest) Signed-off-by: dependabot-preview[bot] <[email protected]>