Bump nokogiri from 1.10.1 to 1.10.4 in /examples/nokogiri_script

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.1 to 1.10.4.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.1...v1.10.4)

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

Author: dependabot[bot]

examples/nokogiri_script/Gemfile

@@ -1,3 +1,3 @@
 source 'https://rubygems.org'
 
-gem 'nokogiri', '~> 1.10', '>= 1.10.1'
+gem 'nokogiri', '~> 1.10'

examples/nokogiri_script/Gemfile.lock

@@ -2,14 +2,14 @@ GEM
   remote: https://rubygems.org/
   specs:
     mini_portile2 (2.4.0)
-    nokogiri (1.10.1)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  nokogiri (~> 1.10, >= 1.10.1)
+  nokogiri (~> 1.10)
 
 BUNDLED WITH
    1.16.2