tools: update ESLint to 5.14.1

Update ESLint to 5.14.1

PR-URL: https://github.com/nodejs/node/pull/26190


Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>