Swap out sneakers with bunny.

Gemfile.lock

@@ -232,9 +232,6 @@ GEM
       rspec-support (~> 3.5.0)
     rspec-support (3.5.0)
     ruby-graphviz (1.2.3)
-    serverengine (1.5.11)
-      sigdump (~> 0.2.2)
-    sigdump (0.2.4)
     simplecov (0.15.1)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
@@ -242,11 +239,6 @@ GEM
     simplecov-html (0.10.2)
     skylight (1.4.0)
       activesupport (>= 3.0.0)
-    sneakers (2.6.0)
-      bunny (~> 2.7.0)
-      concurrent-ruby (~> 1.0)
-      serverengine (~> 1.5.11)
-      thor
     sprockets (3.7.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -276,6 +268,7 @@ PLATFORMS
 
 DEPENDENCIES
   active_model_serializers
+  bunny
   codecov
   database_cleaner
   delayed_job
@@ -306,7 +299,6 @@ DEPENDENCIES
   simplecov
   skylight (= 1.4.0)
   smarf_doc!
-  sneakers
   thin
   tzinfo
   webpack-rails