Bump nokogiri from 1.12.5 to 1.13.1

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.12.5 to 1.13.1.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/v1.13.1/CHANGELOG.md)
- [Commits](https://github.com/sparklemotion/nokogiri/compare/v1.12.5...v1.13.1)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -146,7 +146,7 @@ GEM
       nokogiri (>= 1.5.9)
     mercenary (0.4.0)
     method_source (1.0.0)
-    mini_portile2 (2.6.1)
+    mini_portile2 (2.7.1)
     mini_racer (0.6.0)
       libv8-node (~> 16.10.0.0)
     minima (2.5.1)
@@ -155,8 +155,8 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.4)
     multipart-post (2.1.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.13.1)
+      mini_portile2 (~> 2.7.0)
       racc (~> 1.4)
     octokit (4.18.0)
       faraday (>= 0.9)