Add support Ruby v2.5.0 (#6097)

Gemfile.lock

@@ -110,7 +110,7 @@ GEM
       activesupport
     charlock_holmes (0.7.5)
     chunky_png (1.3.8)
-    cld3 (3.2.1)
+    cld3 (3.2.2)
       ffi (>= 1.1.0, < 1.10.0)
     climate_control (0.2.0)
     cocaine (0.5.8)
@@ -125,7 +125,7 @@ GEM
     css_parser (1.6.0)
       addressable
     debug_inspector (0.0.3)
-    devise (4.3.0)
+    devise (4.4.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
       railties (>= 4.1.0, < 5.2)
@@ -568,7 +568,7 @@ DEPENDENCIES
   charlock_holmes (~> 0.7.5)
   cld3 (~> 3.2.0)
   climate_control (~> 0.2)
-  devise (~> 4.3)
+  devise (~> 4.4)
   devise-two-factor (~> 3.0)
   doorkeeper (~> 4.2)
   dotenv-rails (~> 2.2)
@@ -649,7 +649,7 @@ DEPENDENCIES
   webpush
 
 RUBY VERSION
-   ruby 2.4.2p198
+   ruby 2.5.0p0
 
 BUNDLED WITH
    1.16.1