Bump mail-notify from 1.1.0 to 1.2.0

Bumps [mail-notify](https://github.com/dxw/mail-notify) from 1.1.0 to 1.2.0.
- [Changelog](https://github.com/dxw/mail-notify/blob/master/CHANGELOG.md)
- [Commits](dxw/mail-notify@1.1.0...1.2.0)

---
updated-dependencies:
- dependency-name: mail-notify
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -202,7 +202,7 @@ GEM
       net-imap
       net-pop
       net-smtp
-    mail-notify (1.1.0)
+    mail-notify (1.2.0)
       actionmailer (>= 5.2.4.6)
       actionpack (>= 5.2.7.1)
       actionview (>= 5.2.7.1)
@@ -223,14 +223,14 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.3.0)
-    net-imap (0.3.7)
+    net-imap (0.4.2)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
     net-protocol (0.2.1)
       timeout
-    net-smtp (0.3.3)
+    net-smtp (0.4.0)
       net-protocol
     netrc (0.11.0)
     nio4r (2.5.9)