Update dependency gh-pages to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gh-pages	2.0.1 -> 3.2.1

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Release Notes

tschaub/gh-pages

v3.2.1

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• #​393 - security(deps): bump filenamify-url to 2.1.1 (@​AviVahl)

v3.2.0

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This release updates a few development dependencies and adds a bit of documentation.

• #​391 - Update dev dependencies (@​tschaub)
• #​375 - Add note about domain problem (@​demee)
• #​390 - Fix little typo in the README (@​cizordj)
• #​388 - Bump hosted-git-info from 2.8.8 to 2.8.9 (@​tschaub)
• #​387 - Bump y18n from 4.0.0 to 4.0.3 (@​tschaub)
• #​378 - Add GitHub Actions tips to readme.md (@​mickelsonmichael)
• #​386 - Bump lodash from 4.17.14 to 4.17.21 (@​tschaub)

v3.1.0

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The cache directory used by gh-pages is now node_modules/.cache/gh-pages. If you want to use a different location, set the CACHE_DIR environment variable.

• #​362 - Move the cache directory (@​tschaub)
• #​361 - Update dev dependencies (@​tschaub)

v3.0.0

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Breaking changes:

None really. But tests are no longer run on Node < 10. Development dependencies were updated to address security warnings, and this meant tests could no longer be run on Node 6 or 8. If you still use these Node versions, you may still be able to use this library, but be warned that tests are no longer run on these versions.

All changes:

• #​357 - Dev dependency updates (@​tschaub)
• #​333 - Update readme with command line options (@​Victoire44)
• #​356 - Test as a GitHub action (@​tschaub)
• #​355 - feat(beforeAdd): allow custom script before git add (@​Xiphe)
• #​336 - Fix remove not working properly (@​sunghwan2789)
• #​328 - Update .travis.yml (@​XhmikosR)
• #​327 - Fix typo (@​d-tsuji)

v2.2.0

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• #​318 - Allow an absolute path as dist directory (@​okuryu)
• #​319 - Added 'remove' documentation to the readme (@​Sag-Dev)
• #​323 - Update dependencies (@​tschaub)
• #​277 - Add --no-history flag not to preserve deploy history (@​dplusic)

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)

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