Fix bug get Forbidden last version github

lib/github/api.rb

@@ -12,7 +12,9 @@ class Github::API
 
   def self.call(end_point, params = {})
     RestClient::Resource.new(
-        base_uri+end_point
+        base_uri+end_point, timeout: 5
     ).get(params: params)
+  rescue RestClient::Forbidden
+    nil
   end
 end

lib/github/releases.rb

@@ -2,8 +2,10 @@ class Github::Releases
 
   def self.latest
     release = Hashie::Mash.new JSON.parse(Github::API.latest_release)
-    release.published_at = release.published_at.to_date.strftime('%d/%m/%Y')
 
+    return nil if release.nil?
+
+    release.published_at = release.published_at.to_date.strftime('%d/%m/%Y')
     release
   end
 end