Bump compass-rails from 3.1.0 to 4.0.0

Bumps [compass-rails](https://github.com/Compass/compass-rails) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/Compass/compass-rails/releases)
- [Changelog](https://github.com/Compass/compass-rails/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Compass/compass-rails/commits)

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

Gemfile.lock

@@ -173,7 +173,7 @@ GEM
       xpath (>= 2.0, < 4.0)
     childprocess (3.0.0)
     chronic (0.10.2)
-    chunky_png (1.3.10)
+    chunky_png (1.3.11)
     climate_control (0.2.0)
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
@@ -200,7 +200,7 @@ GEM
       sass (>= 3.3.0, < 3.5)
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
-    compass-rails (3.1.0)
+    compass-rails (4.0.0)
       compass (~> 1.0.0)
       sass-rails (< 5.1)
       sprockets (< 4.0)
@@ -257,7 +257,7 @@ GEM
     faraday (1.0.0)
       multipart-post (>= 1.2, < 3)
     ffaker (1.22.1)
-    ffi (1.11.3)
+    ffi (1.12.2)
     figaro (1.1.1)
       thor (~> 0.14)
     fission (0.5.0)
@@ -559,8 +559,8 @@ GEM
       activerecord (~> 3.0)
       polyamorous (~> 0.5.0)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rbvmomi (1.13.0)
       builder (~> 3.0)
       json (>= 1.8)