Bump nokogiri from 1.8.1 to 1.10.8

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.8.1 to 1.10.8.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.8.1...v1.10.8)

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

Gemfile

@@ -36,7 +36,7 @@ gem 'mongoid_magic_counter_cache'
 # function 'handle_threads_query'.
 gem 'will_paginate_mongoid', "~>2.0"
 gem 'rdiscount'
-gem 'nokogiri', "~>1.8.1"
+gem 'nokogiri', "~>1.10.8"
 
 gem 'elasticsearch', '~> 1.1.2'
 gem 'elasticsearch-model', '~> 0.1.9'

Gemfile.lock

@@ -99,7 +99,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.14.0)
     mongo (2.5.3)
       bson (>= 4.3.0, < 5.0.0)
@@ -121,8 +121,8 @@ GEM
     nenv (0.3.0)
     netrc (0.11.0)
     newrelic_rpm (5.6.0.349)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.8)
+      mini_portile2 (~> 2.4.0)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -235,7 +235,7 @@ DEPENDENCIES
   mongoid_cleaner (~> 1.2.0)
   mongoid_magic_counter_cache
   newrelic_rpm
-  nokogiri (~> 1.8.1)
+  nokogiri (~> 1.10.8)
   protected_attributes_continued
   pry
   pry-nav