Merge pull request #792 from codebar/dependabot/bundler/letter_opener-1.6.0

Bump letter_opener from 1.4.1 to 1.6.0

Author: despo

Gemfile.lock

@@ -200,7 +200,7 @@ GEM
     jwt (1.5.2)
     launchy (2.4.3)
       addressable (~> 2.3)
-    letter_opener (1.4.1)
+    letter_opener (1.6.0)
       launchy (~> 2.2)
     loofah (2.2.2)
       crass (~> 1.0.2)