Bump peaceiris/actions-hugo from 2.5.0 to 2.6.0 (#678)

Bumps [peaceiris/actions-hugo](https://github.com/peaceiris/actions-hugo) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/peaceiris/actions-hugo/releases)
- [Changelog](https://github.com/peaceiris/actions-hugo/blob/main/CHANGELOG.md)
- [Commits](https://github.com/peaceiris/actions-hugo/compare/v2.5.0...v2.6.0)

---
updated-dependencies:
- dependency-name: peaceiris/actions-hugo
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
 
     # install Hugo
     - name: Setup Hugo
-      uses: peaceiris/actions-hugo@v2.5.0
+      uses: peaceiris/actions-hugo@v2.6.0
       with:
         hugo-version: 'latest'
         extended: true