Update lodash to 4.17.13

2 lodash vulnerabilities found in yarn.lock 

Remediation
Upgrade lodash to version 4.17.13 or later. For example:

lodash@^4.17.13:
version "4.17.13"

https://github.com/lodash/lodash/pull/4336
https://nvd.nist.gov/vuln/detail/CVE-2019-1010266