Bump sass-rails from 5.0.4 to 5.0.7

Bumps [sass-rails](https://github.com/rails/sass-rails) from 5.0.4 to 5.0.7.
- [Release notes](https://github.com/rails/sass-rails/releases)
- [Commits](rails/sass-rails@v5.0.4...v5.0.7)

Gemfile.lock

@@ -363,8 +363,8 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sass-rails (5.0.4)
-      railties (>= 4.0.0, < 5.0)
+    sass-rails (5.0.7)
+      railties (>= 4.0.0, < 6)
       sass (~> 3.1)
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
@@ -397,7 +397,7 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     thread_safe (0.3.6-java)
-    tilt (2.0.1)
+    tilt (2.0.9)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     uglifier (2.7.2)