[Snyk] Upgrade yargs from 13.2.4 to 15.3.1

Snyk has created this PR to upgrade yargs from 13.2.4 to 15.3.1.

:information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

Warning: This is a major version upgrade, and may be a breaking change.

The recommended version is 21 versions ahead of your current version.
The recommended version was released 2 months ago, on 2020-03-16.

Release notes

Package name: yargs

15.3.1 - 2020-03-16
Bug Fixes
- __proto__ will now be replaced with ___proto___ in parse (#258), patching a potential
  prototype pollution vulnerability. This was reported by the Snyk Security Research Team. (63810ca)
15.3.1-beta.0 - 2020-03-12
15.3.0 - 2020-03-08
Features
- yargs-parser: introduce single-digit boolean aliases (#1576) (3af7f04)
- add usage for single-digit boolean aliases (#1580) (6014e39)
Bug Fixes
- address ambiguity between nargs of 1 and requiresArg (#1572) (a5edc32)
15.3.0-beta.1 - 2020-03-08
15.3.0-beta.0 - 2020-03-02
15.2.0 - 2020-03-01
⚠ BREAKING CHANGES
- deps: yargs-parser@17.0.0 no longer implicitly creates arrays out of boolean
  arguments when duplicates are provided
Features
- completion: takes negated flags into account when boolean-negation is set (#1509) (7293ad5)
- deps: pull in yargs-parser@17.0.0 (#1553) (b9409da)
- deprecateOption (#1559) (8aae333)
- display appropriate $0 for electron apps (#1536) (d0e4379)
- introduces strictCommands() subset of strict mode (#1540) (1d4cca3)
- deps: yargs-parser with 'greedy-array' configuration (#1569) (a03a320)
Bug Fixes
- help always displayed for the first command parsed having an async handler (#1535) (d585b30)
- deps: fix enumeration for normalized path arguments (#1567) (0b5b1b0)
- locales: only translate default option group name (acc16de)
- locales: remove extra space in French for 'default' (#1564) (ecfc2c4)
- translations: add French translation for unknown command (#1563) (18b0b75)
- translations: fix pluralization in error messages. (#1557) (94fa38c)
- yargs: correct support of bundled electron apps (#1554) (a0b61ac)
15.2.0-beta.2 - 2020-03-01
15.2.0-beta.1 - 2020-02-29
15.2.0-beta.0 - 2020-02-24
15.1.0 - 2020-01-02
Features
- lang: add Finnish localization (language code fi) (222c8fe)
- complete short options with a single dash (#1507) (99011ab)
- onFinishCommand handler (#1473) (fe380cd)
Bug Fixes
- getCompletion() was not working for options (#1495) (463feb2)
- misspelling of package.json engines field (0891d0e)
- populate positionals when unknown-options-as-args is set (#1508) (bb0f2eb), closes #1444
- show 2 dashes on help for single digit option key or alias (#1493) (63b3dd3)
- docs: use recommended cjs import syntax for ts examples (#1513) (f9a18bf)
15.0.2 - 2019-11-19
Bug Fixes
- temporary fix for libraries that call Object.freeze() (#1483) (99c2dc8)
15.0.1 - 2019-11-16
Bug Fixes
- deps: cliui, find-up, and string-width, all drop Node 6 support (#1479) (6a9ebe2)
15.0.0 - 2019-11-10
⚠ BREAKING CHANGES
- deps: yargs-parser now throws on invalid combinations of config (#1470)
- yargs-parser@16.0.0 drops support for Node 6
- drop Node 6 support (#1461)
- remove package.json-based parserConfiguration (#1460)
Features
- deps: yargs-parser now throws on invalid combinations of config (#1470) (c10c38c)
- expose Parser from require('yargs/yargs') (#1477) (1840ba2)
Bug Fixes
- docs: TypeScript import to prevent a future major release warning (#1441) (b1b156a)
- stop-parse was not being respected by commands (#1459) (12c82e6)
- update to yargs-parser with fix for array default values (#1463) (ebee59d)
- docs: update boolean description and examples in docs (#1474) (afd5b48)
Miscellaneous Chores
- drop Node 6 support (#1461) (2ba8ce0)
Code Refactoring
- remove package.json-based parserConfiguration (#1460) (0d3642b)
14.2.3 - 2020-03-13
14.2.2 - 2019-11-19
14.2.1 - 2019-10-30
14.2.0 - 2019-10-07
chore(release): 14.2.0
14.1.0 - 2019-09-06
chore(release): 14.1.0
14.0.0 - 2019-07-30
13.3.2 - 2020-03-13
13.3.0 - 2019-06-10
13.2.4 - 2019-05-13