fix(deps): update dependency commander to v6.1.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
commander	dependencies	minor	6.0.0 -> 6.1.0

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Release Notes

tj/commander.js

v6.1.0

Compare Source

Added

• include URL to relevant section of README for error for potential conflict between Command properties and option values ([#​1306])
• .combineFlagAndOptionalValue(false) to ease upgrade path from older versions of Commander ([#​1326])
• allow disabling the built-in help option using .helpOption(false) ([#​1325])
• allow just some arguments in argumentDescription to .description() ([#​1323])

Changed

• tidy async test and remove lint override ([#​1312])

Fixed

• executable subcommand launching when script path not known ([#​1322])

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