[Security] Bump nokogiri from 1.10.10 to 1.11.1

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.10 to 1.11.1. **This update includes security fixes.**
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.10...v1.11.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Gemfile.lock

@@ -160,7 +160,7 @@ GEM
     mime-types-data (3.2020.0512)
     mimemagic (0.3.5)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     mini_racer (0.3.1)
       libv8 (~> 8.4.255)
     minitest (5.14.2)
@@ -170,8 +170,9 @@ GEM
       ruby2_keywords (~> 0.0.1)
     nenv (0.3.0)
     nio4r (2.5.3)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -189,6 +190,7 @@ GEM
     public_suffix (4.0.6)
     puma (4.3.6)
       nio4r (~> 2.0)
+    racc (1.5.2)
     rack (2.2.3)
     rack-cache (1.12.0)
       rack (>= 0.4)