Bump nokogiri from 1.8.2 to 1.10.9

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.8.2 to 1.10.9.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.8.2...v1.10.9)

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

Gemfile.lock

@@ -349,7 +349,7 @@ GEM
     mime-types-data (3.2016.0521)
     mimemagic (0.3.2)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
     minitest-autotest (1.1.1)
       minitest-server (~> 1.0)
@@ -360,8 +360,8 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     newrelic_rpm (3.18.1.330)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.9)
+      mini_portile2 (~> 2.4.0)
     oauth2 (1.4.0)
       faraday (>= 0.8, < 0.13)
       jwt (~> 1.0)