FIX: Bump onebox version for gfycat aspect ratio fix

FIX: Bump onebox version for gfycat aspect ratio fix

diff --git a/Gemfile b/Gemfile
index fdec382..d715161 100644
--- a/Gemfile
+++ b/Gemfile
@@ -36,7 +36,7 @@ gem 'redis-namespace'
 
 gem 'active_model_serializers', '~> 0.8.3'
 
-gem 'onebox', '1.8.75'
+gem 'onebox', '1.8.76'
 
 gem 'http_accept_language', '~>2.0.5', require: false

GitHub sha: 1f070898