Bump flow-copy-source from 2.0.7 to 2.0.9

[dependabot-preview[bot]]

Bumps flow-copy-source from 2.0.7 to 2.0.9.

Changelog

Sourced from flow-copy-source's changelog.

2.0.9 (2019-11-18)

• Updated yargs dependency from v14 to v15.

2.0.8 (2019-08-19)

• Updated yargs dependency from v13 to v14.

Commits

• 562cd08 v2.0.9
• b257004 run jest without jsdom
• ab6f184 update changelog
• f1efcd9 update dev deps
• fb73ab7 Merge pull request #26 from Macil/greenkeeper/yargs-15.0.1
• 23ac518 chore(package): update lockfile yarn.lock
• 63275db fix(package): update yargs to version 15.0.1
• ebe9621 v2.0.8
• ae712e9 update changelog
• 7aa8f7e update devdeps
• Additional commits viewable in compare view

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