Update dependency gitlab-dangerfiles to v4

Gemfile

@@ -6,5 +6,5 @@ group :development, :test do
 end
 
 group :development, :danger do
-  gem 'gitlab-dangerfiles', '~> 3.13.0'
+  gem 'gitlab-dangerfiles', '~> 4.0.0'
 end

Gemfile.lock

@@ -3,6 +3,7 @@ GEM
   specs:
     addressable (2.8.5)
       public_suffix (>= 2.0.2, < 6.0)
+    base64 (0.1.1)
     claide (1.1.0)
     claide-plugins (0.9.2)
       cork
@@ -11,56 +12,38 @@ GEM
     colored2 (3.1.2)
     cork (0.3.0)
       colored2 (~> 3.1)
-    danger (8.6.1)
+    danger (9.3.1)
       claide (~> 1.0)
       claide-plugins (>= 0.9.2)
       colored2 (~> 3.1)
       cork (~> 0.1)
-      faraday (>= 0.9.0, < 2.0)
+      faraday (>= 0.9.0, < 3.0)
       faraday-http-cache (~> 2.0)
-      git (~> 1.7)
+      git (~> 1.13)
       kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.0)
       no_proxy_fix
-      octokit (~> 4.7)
+      octokit (~> 6.0)
       terminal-table (>= 1, < 4)
     danger-gitlab (8.0.0)
       danger
       gitlab (~> 4.2, >= 4.2.0)
     diff-lcs (1.5.0)
-    faraday (1.10.3)
-      faraday-em_http (~> 1.0)
-      faraday-em_synchrony (~> 1.0)
-      faraday-excon (~> 1.1)
-      faraday-httpclient (~> 1.0)
-      faraday-multipart (~> 1.0)
-      faraday-net_http (~> 1.0)
-      faraday-net_http_persistent (~> 1.0)
-      faraday-patron (~> 1.0)
-      faraday-rack (~> 1.0)
-      faraday-retry (~> 1.0)
+    faraday (2.7.11)
+      base64
+      faraday-net_http (>= 2.0, < 3.1)
       ruby2_keywords (>= 0.0.4)
-    faraday-em_http (1.0.0)
-    faraday-em_synchrony (1.0.0)
-    faraday-excon (1.1.0)
     faraday-http-cache (2.5.0)
       faraday (>= 0.8)
-    faraday-httpclient (1.0.1)
-    faraday-multipart (1.0.4)
-      multipart-post (~> 2)
-    faraday-net_http (1.0.1)
-    faraday-net_http_persistent (1.2.0)
-    faraday-patron (1.0.0)
-    faraday-rack (1.0.0)
-    faraday-retry (1.0.3)
+    faraday-net_http (3.0.2)
     git (1.18.0)
       addressable (~> 2.8)
       rchardet (~> 1.8)
     gitlab (4.19.0)
       httparty (~> 0.20)
       terminal-table (>= 1.5.1)
-    gitlab-dangerfiles (3.13.0)
-      danger (>= 8.4.5)
+    gitlab-dangerfiles (4.0.0)
+      danger (>= 9.3.0)
       danger-gitlab (>= 8.0.0)
       rake
     httparty (0.21.0)
@@ -70,16 +53,15 @@ GEM
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    mini_mime (1.1.2)
+    mini_mime (1.1.5)
     multi_xml (0.6.0)
-    multipart-post (2.3.0)
     nap (1.1.0)
     no_proxy_fix (0.1.2)
-    octokit (4.25.1)
+    octokit (6.1.1)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
     open4 (1.3.4)
-    public_suffix (4.0.7)
+    public_suffix (5.0.3)
     rake (13.0.6)
     rchardet (1.8.0)
     rexml (3.2.6)
@@ -109,9 +91,9 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  gitlab-dangerfiles (~> 3.13.0)
+  gitlab-dangerfiles (~> 4.0.0)
   rspec (~> 3.12.0)
   webrick (~> 1.8, >= 1.8.1)
 
 BUNDLED WITH
-   2.4.18
+   2.4.19