Use AgileVentures forked Gem (AgileVentures#2502)

acts_as_follower is no longer maintained. Forked Gem to fix deprecation
warning spamming the output of our tests.

Author: NickSchimek

Gemfile

@@ -4,7 +4,7 @@ ruby '2.5.1'
 
 gem 'rails', '~> 5.1'
 gem 'acts-as-taggable-on'
-gem 'acts_as_follower', git: 'https://github.com/tcocca/acts_as_follower.git'
+gem 'acts_as_follower', git: 'https://github.com/AgileVentures/acts_as_follower.git'
 gem 'acts_as_tree'
 gem 'acts_as_votable', '~> 0.11.1'
 gem 'airbrake'

Gemfile.lock

@@ -1,3 +1,10 @@
+GIT
+  remote: https://github.com/AgileVentures/acts_as_follower.git
+  revision: 894b44451c609a9facfdb8a15bca4fc17ea1eb76
+  specs:
+    acts_as_follower (0.2.1)
+      activerecord (>= 4.0)
+
 GIT
   remote: https://github.com/AgileVentures/codeclimate_badges
   revision: 88f15dfae8679a7895e8fa3cf6a9cb39f665745e
@@ -13,13 +20,6 @@ GIT
       coffee-rails (>= 3.2.2)
       railties (>= 3.0)
 
-GIT
-  remote: https://github.com/tcocca/acts_as_follower.git
-  revision: c5ac7b9601c4af01eb4d9112330b27be4d694ecc
-  specs:
-    acts_as_follower (0.2.1)
-      activerecord (>= 4.0)
-
 GEM
   remote: https://rubygems.org/
   specs: