Update dependency argparse to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
argparse	devDependencies	major	1.0.10 -> 2.0.0

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Release Notes

nodeca/argparse

v2.0.0

Compare Source

Changed

• Full rewrite. Now port from python 3.9.0 & more precise following.
  See doc for difference and migration info.
• node.js 10+ required
• Removed most of local docs in favour of original ones.

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[codecov-commenter]

Codecov Report

Merging #88 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #88   +/-   ##
=======================================
  Coverage   95.16%   95.16%           
=======================================
  Files          49       49           
  Lines         559      559           
=======================================
  Hits          532      532           
  Misses         27       27           

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[coveralls]

Coverage remained the same at 95.17% when pulling fd15478 on renovate/argparse-2.x into 7e506ce on master.