Merge pull request #1743 from alphagov/dependabot/bundler/mongoid-8.1.4

Bump mongoid from 8.1.3 to 8.1.4

Author: beccapearce

Gemfile.lock

@@ -246,7 +246,7 @@ GEM
     minitest (5.20.0)
     mongo (2.19.3)
       bson (>= 4.14.1, < 5.0.0)
-    mongoid (8.1.3)
+    mongoid (8.1.4)
       activemodel (>= 5.1, < 7.2, != 7.0.0)
       concurrent-ruby (>= 1.0.5, < 2.0)
       mongo (>= 2.18.0, < 3.0.0)