Bump nokogiri from 1.10.10 to 1.11.0

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.10 to 1.11.0.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.10...v1.11.0)

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

Gemfile.lock

@@ -88,10 +88,11 @@ GEM
     middleman-syntax (3.2.0)
       middleman-core (>= 3.2)
       rouge (~> 3.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.0)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.13.3.4)
@@ -100,6 +101,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.20.0)
     public_suffix (4.0.6)
+    racc (1.5.2)
     rack (2.2.3)
     rack-livereload (0.3.17)
       rack