Merge pull request #2216 from alphagov/dependabot/bundler/net-imap-0.5.7

Author: govuk-ci

Gemfile.lock

@@ -277,7 +277,7 @@ GEM
       bigdecimal (~> 3.1)
     net-http (0.6.0)
       uri
-    net-imap (0.5.6)
+    net-imap (0.5.7)
       date
       net-protocol
     net-pop (0.1.2)