Merge pull request #564 from tansengming/dependabot/bundler/loofah-2.19.1

Bump loofah from 2.18.0 to 2.19.1

Author: tansengming

Gemfile.lock

@@ -197,7 +197,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     lodash-rails (4.17.15)
       railties (>= 3.1)
-    loofah (2.18.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)