MNT: (deps): Bump peaceiris/actions-gh-pages from v3.7.3 to v3.8.0
MNT: (deps): Bump peaceiris/actions-gh-pages from v3.7.3 to v3.8.0

Bumps [peaceiris/actions-gh-pages](https://github.com/peaceiris/actions-gh-pages) from v3.7.3 to v3.8.0.
- [Release notes](https://github.com/peaceiris/actions-gh-pages/releases)
- [Changelog](https://github.com/peaceiris/actions-gh-pages/blob/main/CHANGELOG.md)
- [Commits](https://github.com/peaceiris/actions-gh-pages/compare/v3.7.3...068dc23d9710f1ba62e86896f84735d869951305)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Unidata/siphon