[Security] Bump nokogiri from 1.10.2 to 1.10.3

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.2 to 1.10.3. **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@v1.10.2...v1.10.3)

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

Author: dependabot-support

Gemfile.lock

@@ -193,7 +193,7 @@ GEM
     multipart-post (2.0.0)
     netrc (0.11.0)
     nio4r (2.3.1)
-    nokogiri (1.10.2)
+    nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
     nokogumbo (2.0.1)
       nokogiri (~> 1.8, >= 1.8.4)