Bump ahoy_email from 0.5.0 to 0.5.2 (#515)

Bumps [ahoy_email](https://github.com/ankane/ahoy_email) from 0.5.0 to 0.5.2.
- [Release notes](https://github.com/ankane/ahoy_email/releases)
- [Changelog](https://github.com/ankane/ahoy_email/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ankane/ahoy_email/compare/v0.5.0...v0.5.2)

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

Gemfile.lock

@@ -104,10 +104,12 @@ GEM
     after_commit_action (1.1.0)
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
-    ahoy_email (0.5.0)
-      addressable
+    ahoy_email (0.5.2)
+      actionmailer
+      activerecord
+      addressable (>= 2.3.2)
       nokogiri
-      rails
+      railties
       safely_block (>= 0.1.1)
     airbrake (5.8.1)
       airbrake-ruby (~> 1.8)
@@ -258,7 +260,7 @@ GEM
       thor (~> 0.15)
     environs (1.1.0)
     equalizer (0.0.11)
-    errbase (0.0.3)
+    errbase (0.1.0)
     erubi (1.7.1)
     eventmachine (1.2.5)
     excon (0.60.0)
@@ -752,7 +754,7 @@ GEM
       rails (>= 3.1)
       sass-rails (>= 3.1)
     safe_yaml (1.0.4)
-    safely_block (0.2.0)
+    safely_block (0.2.1)
       errbase
     sass (3.5.5)
       sass-listen (~> 4.0.0)