Bump github_api to 0.17.0

Bumps [github_api](https://github.com/piotrmurach/github) from 0.12.2 to 0.17.0.
- [Changelog](https://github.com/piotrmurach/github/blob/master/CHANGELOG.md)
- [Commits](piotrmurach/github@v0.12.2...v0.17.0)

Author: dependabot[bot]

Gemfile

@@ -29,7 +29,7 @@ gem 'turbolinks'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 1.2'
 
-gem "github_api", '~> 0.11'
+gem "github_api", '~> 0.17'
 
 gem 'bootstrap-sass', '~> 3.0.3'
 gem 'font-awesome-rails', '~> 4.0.3'

Gemfile.lock

@@ -25,7 +25,7 @@ GEM
       multi_json (~> 1.3)
       thread_safe (~> 0.1)
       tzinfo (~> 0.3.37)
-    addressable (2.3.6)
+    addressable (2.4.0)
     arel (4.0.2)
     backports (3.6.4)
     bcrypt (3.1.9)
@@ -100,7 +100,7 @@ GEM
     factory_girl_rails (4.5.0)
       factory_girl (~> 4.5.0)
       railties (>= 3.0.0)
-    faraday (0.9.0)
+    faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
     faraday_middleware (0.9.1)
       faraday (>= 0.7.4, < 0.10)
@@ -117,14 +117,13 @@ GEM
       net-http-pipeline
     gherkin (2.12.2)
       multi_json (~> 1.3)
-    github_api (0.12.2)
-      addressable (~> 2.3)
+    github_api (0.17.0)
+      addressable (~> 2.4.0)
       descendants_tracker (~> 0.0.4)
       faraday (~> 0.8, < 0.10)
-      hashie (>= 3.3)
-      multi_json (>= 1.7.5, < 2.0)
-      nokogiri (~> 1.6.3)
-      oauth2
+      hashie (>= 3.4)
+      mime-types (>= 1.16, < 3.0)
+      oauth2 (~> 1.0)
     guard (2.10.4)
       formatador (>= 0.2.4)
       listen (~> 2.7)
@@ -142,7 +141,7 @@ GEM
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
-    hashie (3.3.2)
+    hashie (3.5.5)
     highline (1.6.21)
     hike (1.2.3)
     hitimes (1.2.2)
@@ -154,7 +153,7 @@ GEM
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
     json (1.8.6)
-    jwt (1.2.0)
+    jwt (1.5.6)
     kramdown (1.5.0)
     launchy (2.4.3)
       addressable (~> 2.3)
@@ -167,24 +166,24 @@ GEM
       mime-types (>= 1.16, < 3)
     method_source (0.8.2)
     mime-types (2.4.3)
-    mini_portile (0.6.1)
+    mini_portile2 (2.1.0)
     minitest (4.7.5)
-    multi_json (1.10.1)
+    multi_json (1.12.1)
     multi_test (0.1.1)
-    multi_xml (0.5.5)
+    multi_xml (0.6.0)
     multipart-post (2.0.0)
     nenv (0.1.1)
     net-http-persistent (2.9.4)
     net-http-pipeline (1.0.1)
     netrc (0.10.1)
-    nokogiri (1.6.5)
-      mini_portile (~> 0.6.0)
-    oauth2 (1.0.0)
-      faraday (>= 0.8, < 0.10)
+    nokogiri (1.7.2)
+      mini_portile2 (~> 2.1.0)
+    oauth2 (1.3.1)
+      faraday (>= 0.8, < 0.12)
       jwt (~> 1.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (~> 1.2)
+      rack (>= 1.2, < 3)
     omniauth (1.2.2)
       hashie (>= 1.2, < 4)
       rack (~> 1.0)
@@ -210,7 +209,7 @@ GEM
     pusher-client (0.6.0)
       json
       websocket (~> 1.0)
-    rack (1.5.2)
+    rack (1.5.5)
     rack-google-analytics (1.2.0)
       actionpack
       activesupport
@@ -294,7 +293,7 @@ GEM
     term-ansicolor (1.3.0)
       tins (~> 1.0)
     thor (0.19.1)
-    thread_safe (0.3.4)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     timecop (0.7.1)
     timers (4.0.1)
@@ -346,7 +345,7 @@ DEPENDENCIES
   dotenv-rails
   factory_girl_rails
   font-awesome-rails (~> 4.0.3)
-  github_api (~> 0.11)
+  github_api (~> 0.17)
   guard
   guard-cucumber
   guard-rspec