Update gitlab-dangerfiles to fix an issue with labels added by Danger

Signed-off-by: Rémy Coutable <remy@rymai.me>

Gemfile

@@ -398,7 +398,7 @@ group :development, :test do
 end
 
 group :development, :test, :danger do
-  gem 'gitlab-dangerfiles', '~> 2.10.1', require: false
+  gem 'gitlab-dangerfiles', '~> 2.10.2', require: false
 end
 
 group :development, :test, :coverage do

Gemfile.lock

@@ -463,7 +463,7 @@ GEM
       terminal-table (~> 1.5, >= 1.5.1)
     gitlab-chronic (0.10.5)
       numerizer (~> 0.2)
-    gitlab-dangerfiles (2.10.1)
+    gitlab-dangerfiles (2.10.2)
       danger (>= 8.3.1)
       danger-gitlab (>= 8.0.0)
     gitlab-experiment (0.7.0)
@@ -1478,7 +1478,7 @@ DEPENDENCIES
   gitaly (~> 14.8.0.pre.rc1)
   github-markup (~> 1.7.0)
   gitlab-chronic (~> 0.10.5)
-  gitlab-dangerfiles (~> 2.10.1)
+  gitlab-dangerfiles (~> 2.10.2)
   gitlab-experiment (~> 0.7.0)
   gitlab-fog-azure-rm (~> 1.2.0)
   gitlab-labkit (~> 0.22.0)

danger/product_intelligence/Dangerfile

@@ -19,4 +19,4 @@ return if product_intelligence_paths_to_review.empty? || product_intelligence.sk
 
 warn format(CHANGED_FILES_MESSAGE, changed_files: helper.markdown_list(product_intelligence_paths_to_review)) unless product_intelligence.has_approved_label?
 
-helper.labels_to_add.merge(labels_to_add) unless labels_to_add.empty?
+helper.labels_to_add.concat(labels_to_add) unless labels_to_add.empty?

danger/specialization_labels/Dangerfile

@@ -26,4 +26,4 @@ labels_to_add = helper.changes_by_category.each_with_object([]) do |(category, _
   memo << label
 end
 
-helper.labels_to_add.merge(labels_to_add) if labels_to_add.any?
+helper.labels_to_add.concat(labels_to_add) if labels_to_add.any?

doc/development/dangerbot.md

@@ -124,8 +124,8 @@ NOTE:
 This is applicable to all the projects that use the [`gitlab-dangerfiles` gem](https://rubygems.org/gems/gitlab-dangerfiles).
 
 Danger is often used to improve MR hygiene by adding labels. Instead of calling the
-API directly in your `Dangerfile`, add the labels to `helper.labels_to_add` set (with `helper.labels_to_add << label`
-or `helper.labels_to_add.merge(array_of_labels)`.
+API directly in your `Dangerfile`, add the labels to `helper.labels_to_add` array (with `helper.labels_to_add << label`
+or `helper.labels_to_add.concat(array_of_labels)`.
 `gitlab-dangerfiles` will then take care of adding the labels to the MR with a single API call after all the rules
 have had the chance to add to `helper.labels_to_add`.