Bump nokogiri from 1.10.5 to 1.11.2 (heroku#73)

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.5 to 1.11.2.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.5...v1.11.2)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -84,15 +84,17 @@ GEM
     method_source (0.9.2)
     mimemagic (0.3.3)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minitest (5.11.3)
     msgpack (1.3.1)
     multi_json (1.13.1)
     nio4r (2.5.1)
-    nokogiri (1.10.5)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.2)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     pg (0.19.0)
     puma (3.12.6)
+    racc (1.5.2)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)