Bump middleman-gh-pages from 0.0.3 to 0.4.1
Bump middleman-gh-pages from 0.0.3 to 0.4.1

Bumps [middleman-gh-pages](https://github.com/edgecase/middleman-gh-pages) from 0.0.3 to 0.4.1.
- [Release notes](https://github.com/edgecase/middleman-gh-pages/releases)
- [Commits](https://github.com/edgecase/middleman-gh-pages/compare/v0.0.3...v0.4.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
olivierlacan/keep-a-changelog,olivierlacan/keep-a-changelog