Bump nokogiri from 1.10.8 to 1.11.1 in /builder

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.8 to 1.11.1.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.8...v1.11.1)

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

Author: dependabot[bot]

builder/Gemfile.lock

@@ -80,13 +80,15 @@ GEM
     method_source (0.9.2)
     mimemagic (0.3.4)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minitest (5.14.0)
     msgpack (1.3.1)
     nio4r (2.5.2)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     puma (3.12.6)
+    racc (1.5.2)
     rack (2.2.3)
     rack-proxy (0.6.5)
       rack