Update dependency commander to v2.20.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
commander	2.19.0 -> 2.20.3

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Release Notes

tj/commander.js

v2.20.3

Compare Source

Ran "npm unpublish [email protected]". There is no 2.20.2.

Fixed

• Support Node.js 0.10 (Revert #​1059)

v2.20.1

Compare Source

Fixed

• Improve tracking of executable subcommands.

Changed

• update development dependencies

v2.20.0

Compare Source

• fix: resolve symbolic links completely when hunting for subcommands (#​935)
• Update index.d.ts (#​930)
• Update Readme.md (#​924)
• Remove --save option as it isn't required anymore (#​918)
• Add link to the license file (#​900)
• Added example of receiving args from options (#​858)
• Added missing semicolon (#​882)
• Add extension to .eslintrc (#​876)

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