build(deps-dev): update @types/node requirement from ~6.0.113 to ~6.14.0 (#1181)
build(deps-dev): update @types/node requirement from ~6.0.113 to ~6.14.0 (#1181)

Updates the requirements on [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped) to permit the latest version.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
stryker-mutator/stryker,stryker-mutator/stryker,stryker-mutator/stryker