chore(deps): update dependency gh-pages to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
gh-pages	devDependencies	major	1.2.0 -> 2.1.1

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Release Notes

tschaub/gh-pages

v2.1.1

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• #​312 - Add default for '--git' option (@​tschaub)

v2.1.0

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• #​307 - Dev dependency updates (@​tschaub)
• #​303 - Support '--git' CLI option (@​JRJurman)

v2.0.1

Compare Source

• #​268 - Continue even if no git configured user.

v2.0.0

Compare Source

Breaking changes:

• Requires Node 6 and above. If you require support for Node 4, stick with v1.2.0.

• The git user for commits is determined by running git config user.name and git config user.email in the current working directory when gh-pages is run. Ideally, this is what you want. In v1, the git user was determined based on the gh-pages install directory. If the package was installed globally, the git user might not have been what you expected when running in a directory with a locally configured git user.

• #​264 - Better user handling (thanks @​holloway for getting this going and @​nuklearfiziks and @​paulirish for pushing it over the edge)

• #​263 - Infra: newer syntax and upgrade deps to latest stable versions (@​AviVahl)

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[coveralls]

Pull Request Test Coverage Report for Build 929

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.261%

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Totals
Change from base Build 640:	0.0%
Covered Lines:	36
Relevant Lines:	45

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💛 - Coveralls