Update devise to version 4.3.0 (#3074)

Supports rails 5.1

Gemfile.lock

@@ -112,10 +112,10 @@ GEM
       safe_yaml (~> 1.0.0)
     crass (1.0.2)
     debug_inspector (0.0.3)
-    devise (4.2.1)
+    devise (4.3.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 4.1.0, < 5.1)
+      railties (>= 4.1.0, < 5.2)
       responders
       warden (~> 1.2.3)
     devise-two-factor (3.0.0)
@@ -282,7 +282,7 @@ GEM
     puma (3.8.2)
     rabl (0.13.1)
       activesupport (>= 2.3.14)
-    rack (2.0.2)
+    rack (2.0.3)
     rack-attack (5.0.1)
       rack
     rack-cors (0.4.1)