Merge pull request #8 from WorldWideTelescope/dependabot/bundler/nokogiri-1.10.4

build(deps): bump nokogiri from 1.10.3 to 1.10.4

Gemfile.lock

@@ -200,13 +200,15 @@ GEM
     listen (3.1.5)
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
+    mini_portile2 (2.4.0)
     minima (2.5.0)
       jekyll (~> 3.5)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.11.3)
     multipart-post (2.1.0)
-    nokogiri (1.10.3)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
     octokit (4.14.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.16.2)