Update gitlab-markup gem to avoid binary name collision

See https://gitlab.com/gitlab-org/gitlab-ce/issues/53082

Gemfile

@@ -124,7 +124,7 @@ gem 'seed-fu', '~> 2.3.7'
 # Markdown and HTML processing
 gem 'html-pipeline', '~> 2.8'
 gem 'deckar01-task_list', '2.0.0'
-gem 'gitlab-markup', '~> 1.6.4'
+gem 'gitlab-markup', '~> 1.6.5'
 gem 'github-markup', '~> 1.7.0', require: 'github/markup'
 gem 'redcarpet', '~> 3.4'
 gem 'commonmarker', '~> 0.17'

Gemfile.lock

@@ -272,7 +272,7 @@ GEM
     gitaly-proto (0.123.0)
       grpc (~> 1.0)
     github-markup (1.7.0)
-    gitlab-markup (1.6.4)
+    gitlab-markup (1.6.5)
     gitlab-sidekiq-fetcher (0.3.0)
       sidekiq (~> 5)
     gitlab-styles (2.4.1)
@@ -995,7 +995,7 @@ DEPENDENCIES
   gettext_i18n_rails_js (~> 1.3)
   gitaly-proto (~> 0.123.0)
   github-markup (~> 1.7.0)
-  gitlab-markup (~> 1.6.4)
+  gitlab-markup (~> 1.6.5)
   gitlab-sidekiq-fetcher
   gitlab-styles (~> 2.4)
   gitlab_omniauth-ldap (~> 2.0.4)

Gemfile.rails5.lock

@@ -275,7 +275,7 @@ GEM
     gitaly-proto (0.123.0)
       grpc (~> 1.0)
     github-markup (1.7.0)
-    gitlab-markup (1.6.4)
+    gitlab-markup (1.6.5)
     gitlab-sidekiq-fetcher (0.3.0)
       sidekiq (~> 5)
     gitlab-styles (2.4.1)
@@ -1004,7 +1004,7 @@ DEPENDENCIES
   gettext_i18n_rails_js (~> 1.3)
   gitaly-proto (~> 0.123.0)
   github-markup (~> 1.7.0)
-  gitlab-markup (~> 1.6.4)
+  gitlab-markup (~> 1.6.5)
   gitlab-sidekiq-fetcher
   gitlab-styles (~> 2.4)
   gitlab_omniauth-ldap (~> 2.0.4)