Bump gollum-lib to 4.1.0 and fix dependency mismatch with rouge

Closes #3767

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.3.0 (unreleased)
+  - Bump gollum-lib to 4.1.0 (Stan Hu)
   - Fix API setting of 'public' attribute to false will make a project private (Stan Hu)
   - Handle and report SSL errors in Web hook test (Stan Hu)
   - Fix: Assignee selector is empty when 'Unassigned' is selected (Jose Corcuera)

Gemfile

@@ -52,7 +52,7 @@ gem "gitlab_git", '~> 7.2.20'
 gem 'gitlab_omniauth-ldap', '~> 1.2.1', require: "omniauth-ldap"
 
 # Git Wiki
-gem 'gollum-lib', '~> 4.0.2'
+gem 'gollum-lib', '~> 4.1.0'
 
 # Language detection
 gem "github-linguist", "~> 4.7.0", require: "linguist"

Gemfile.lock

@@ -329,11 +329,11 @@ GEM
       activesupport (>= 4.1.0)
     gollum-grit_adapter (1.0.0)
       gitlab-grit (~> 2.7, >= 2.7.1)
-    gollum-lib (4.0.3)
+    gollum-lib (4.1.0)
       github-markup (~> 1.3.3)
       gollum-grit_adapter (~> 1.0)
       nokogiri (~> 1.6.4)
-      rouge (~> 1.10.1)
+      rouge (~> 1.9)
       sanitize (~> 2.1.0)
       stringex (~> 2.5.1)
     gon (6.0.1)
@@ -884,7 +884,7 @@ DEPENDENCIES
   gitlab_git (~> 7.2.20)
   gitlab_meta (= 7.0)
   gitlab_omniauth-ldap (~> 1.2.1)
-  gollum-lib (~> 4.0.2)
+  gollum-lib (~> 4.1.0)
   gon (~> 6.0.1)
   grape (~> 0.13.0)
   grape-entity (~> 0.4.2)