tools: update ESLint to 5.15.3

Update ESLint to 5.15.3

PR-URL: https://github.com/nodejs/node/pull/26746


Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>