Bump devise from 4.6.2 to 4.7.0 (#465)

Bumps [devise](https://github.com/plataformatec/devise) from 4.6.2 to 4.7.0.
- [Release notes](https://github.com/plataformatec/devise/releases)
- [Changelog](https://github.com/plataformatec/devise/blob/master/CHANGELOG.md)
- [Commits](heartcombo/devise@v4.6.2...v4.7.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Gemfile.lock

@@ -62,7 +62,7 @@ GEM
     airbrake-ruby (1.8.0)
     arel (6.0.4)
     ast (2.4.0)
-    bcrypt (3.1.12)
+    bcrypt (3.1.13)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
     bson (4.3.0)
@@ -88,10 +88,10 @@ GEM
       phonelib
       rest-client (~> 2.0)
       validates_email_format_of
-    devise (4.6.2)
+    devise (4.7.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 4.1.0, < 6.0)
+      railties (>= 4.1.0)
       responders
       warden (~> 1.2.3)
     diff-lcs (1.3)