fix har-validator dependency

Summary

har-validator has a version mismatch (see https://github.com/ahmadnassri/node-har-validator/issues/113) in which the npm version is the 5.1.3, but the package.json says 5.1.2. This leads to an error doing a npm install in a project depending on your module.

Simplest Example to Reproduce

npm install in a project with a dependency to har-validator@5.1.2

Expected Behavior

npm install should run smoothly

Current Behavior

npm ERR! code ETARGET
npm ERR! notarget No matching version found for har-validator@5.1.2
npm ERR! notarget In most cases you or one of your dependencies are requesting
npm ERR! notarget a package version that doesn't exist.
npm ERR! notarget 
npm ERR! notarget It was specified as a dependency of 'request'
npm ERR! notarget 

Possible Solution

Update dependency to be "har-validator": "~5.1.3" instead of "har-validator": "~5.1.0"

Your Environment

software	version
request	2.88.0
node	8.11.3
npm	6.4.1
Operating System	Linux Mint

[tenkiller]

This is the reason why 5.1.2 is no longer found. https://github.com/ahmadnassri/node-har-validator/issues/112#issuecomment-437378269

[Keekuun]

Thanks, I’ve just solved it with the command “npm install har-validator”