Bump foundation-rails from 6.6.2.0 to 6.9.0.0

Bumps [foundation-rails](https://get.foundation) from 6.6.2.0 to 6.9.0.0.

---
updated-dependencies:
- dependency-name: foundation-rails
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -325,12 +325,12 @@ GEM
       net-http
     faraday-retry (2.2.1)
       faraday (~> 2.0)
-    ffi (1.16.3)
+    ffi (1.17.0)
     foreman (0.88.1)
-    foundation-rails (6.6.2.0)
+    foundation-rails (6.9.0.0)
       railties (>= 3.1.0)
-      sass (>= 3.3.0)
-      sprockets-es6 (>= 0.9.0)
+      sassc
+      sprockets-es6
     gaffe (1.2.0)
       rails (>= 4.0.0)
     globalid (1.2.1)
@@ -512,9 +512,6 @@ GEM
     rainbow (3.1.1)
     raindrops (0.20.1)
     rake (13.2.1)
-    rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
-      ffi (~> 1.0)
     recaptcha (5.17.0)
     redis (5.0.8)
       redis-client (>= 0.17.0)
@@ -581,11 +578,6 @@ GEM
       ffi (~> 1.12)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
     sassc (2.4.0)