Bump github-pages from 230 to 231 (#514)

Bumps [github-pages](https://github.com/github/pages-gem) from 230 to 231.
- [Release notes](https://github.com/github/pages-gem/releases)
- [Commits](github/pages-gem@v230...v231)

---
updated-dependencies:
- dependency-name: github-pages
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Gemfile.lock

@@ -41,7 +41,7 @@ GEM
     ffi (1.16.3)
     forwardable-extended (2.6.0)
     gemoji (4.1.0)
-    github-pages (230)
+    github-pages (231)
       github-pages-health-check (= 1.18.2)
       jekyll (= 3.9.5)
       jekyll-avatar (= 0.8.0)
@@ -57,7 +57,7 @@ GEM
       jekyll-paginate (= 1.1.0)
       jekyll-readme-index (= 0.3.0)
       jekyll-redirect-from (= 0.16.0)
-      jekyll-relative-links (= 0.7.0)
+      jekyll-relative-links (= 0.6.1)
       jekyll-remote-theme (= 0.4.3)
       jekyll-sass-converter (= 1.5.2)
       jekyll-seo-tag (= 2.8.0)
@@ -144,7 +144,7 @@ GEM
       jekyll (>= 3.0, < 5.0)
     jekyll-redirect-from (0.16.0)
       jekyll (>= 3.3, < 5.0)
-    jekyll-relative-links (0.7.0)
+    jekyll-relative-links (0.6.1)
       jekyll (>= 3.3, < 5.0)
     jekyll-remote-theme (0.4.3)
       addressable (~> 2.0)