Bump octokit from 4.7.0 to 4.19.0

Bumps [octokit](https://github.com/octokit/octokit.rb) from 4.7.0 to 4.19.0.
- [Release notes](https://github.com/octokit/octokit.rb/releases)
- [Changelog](https://github.com/octokit/octokit.rb/blob/4-stable/RELEASE.md)
- [Commits](https://github.com/octokit/octokit.rb/compare/v4.7.0...v4.19.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Gemfile

@@ -67,7 +67,7 @@ gem 'rack-utf8_sanitizer'
 gem 'redis-semaphore'
 
 #github api
-gem "octokit", "~> 4.0"
+gem "octokit", "~> 4.19"
 gem 'faraday-http-cache'
 
 group :production do

Gemfile.lock

@@ -78,8 +78,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     angular-i18n (0.1.2)
     angular-rails-templates (1.0.2)
       railties (>= 4.2, < 6)
@@ -149,7 +149,7 @@ GEM
     factory_girl_rails (4.8.0)
       factory_girl (~> 4.8.0)
       railties (>= 3.0.0)
-    faraday (0.12.1)
+    faraday (0.12.2)
       multipart-post (>= 1.2, < 3)
     faraday-http-cache (2.0.0)
       faraday (~> 0.8)
@@ -258,7 +258,7 @@ GEM
     msgpack (1.1.0)
     multi_json (1.12.1)
     multi_xml (0.6.0)
-    multipart-post (2.0.0)
+    multipart-post (2.1.1)
     nest (1.1.2)
       redis
     netrc (0.11.0)
@@ -275,7 +275,8 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
-    octokit (4.7.0)
+    octokit (4.19.0)
+      faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     ohm (1.3.2)
       nest (~> 1.0)
@@ -302,7 +303,7 @@ GEM
     pg (0.21.0)
     polyamorous (1.3.1)
       activerecord (>= 3.0)
-    public_suffix (2.0.5)
+    public_suffix (4.0.6)
     puma (5.0.2)
       nio4r (~> 2.0)
     pundit (1.1.0)
@@ -426,9 +427,9 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    sawyer (0.8.1)
-      addressable (>= 2.3.5, < 2.6)
-      faraday (~> 0.8, < 1.0)
+    sawyer (0.8.2)
+      addressable (>= 2.3.5)
+      faraday (> 0.8, < 2.0)
     schema_auto_foreign_keys (0.1.3)
       its-it (~> 1.2)
       schema_plus_foreign_keys (~> 0.1)
@@ -614,7 +615,7 @@ DEPENDENCIES
   mock_redis
   ng-rails-csrf
   ngannotate-rails
-  octokit (~> 4.0)
+  octokit (~> 4.19)
   ohm (~> 1.3.2)
   ohm-expire (~> 0.1.3)
   omniauth-github