npm audit fails: upgrade handlebars >=4.5.3

1. Newman Version (can be found via newman -v): 4.5.6
2. OS details (type, version, and architecture): Mac OS
3. Are you using Newman as a library, or via the CLI? CLI
4. Did you encounter this recently, or has this bug always been there: recently
5. Expected behaviour: npm audit passes
6. Command / script used to run Newman: npm audit
7. Sample collection, and auxiliary files (minus the sensitive details): NA
8. Screenshots (if applicable):

$ cat package.json
{
  "dependencies": {
    "newman": "^4.5.6"
  }
}

$ npm audit

                       === npm audit security report ===

┌──────────────────────────────────────────────────────────────────────────────┐
│                                Manual Review                                 │
│            Some vulnerabilities require your attention to resolve            │
│                                                                              │
│         Visit https://go.npm.me/audit-guide for additional guidance          │
└──────────────────────────────────────────────────────────────────────────────┘
┌───────────────┬──────────────────────────────────────────────────────────────┐
│ High          │ Arbitrary Code Execution                                     │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ handlebars                                                   │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=4.5.2                                                      │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ newman                                                       │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ newman > postman-runtime > handlebars                        │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://npmjs.com/advisories/1316                            │
└───────────────┴──────────────────────────────────────────────────────────────┘
┌───────────────┬──────────────────────────────────────────────────────────────┐
│ High          │ Arbitrary Code Execution                                     │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ handlebars                                                   │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=4.5.3                                                      │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ newman                                                       │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ newman > postman-runtime > handlebars                        │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://npmjs.com/advisories/1324                            │
└───────────────┴──────────────────────────────────────────────────────────────┘
┌───────────────┬──────────────────────────────────────────────────────────────┐
│ High          │ Prototype Pollution                                          │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ handlebars                                                   │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=4.5.3                                                      │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ newman                                                       │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ newman > postman-runtime > handlebars                        │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://npmjs.com/advisories/1325                            │
└───────────────┴──────────────────────────────────────────────────────────────┘
found 3 high severity vulnerabilities in 357 scanned packages
  3 vulnerabilities require manual review. See the full report for details.

[memark]

Please fix this!

[anishkny]

@shamasis thanks - thats good enough for me - please close this issue when its patched to let us know! Cheers! (and by the way absolutely love Postman and esp. newman keep up the great work - sorry if I came off as angry haha)