Bump rollbar from 2.18.0 to 2.27.0

Bumps [rollbar](https://github.com/rollbar/rollbar-gem) from 2.18.0 to 2.27.0.
- [Release notes](https://github.com/rollbar/rollbar-gem/releases)
- [Changelog](https://github.com/rollbar/rollbar-gem/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollbar/rollbar-gem/compare/v2.18.0...v2.27.0)

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

Gemfile

@@ -46,7 +46,7 @@ gem "recipient_interceptor", "~> 0.2.0"
 gem "redcarpet", "~> 3.4.0"
 gem "responders", "~> 2.4.0"
 gem "rinku", "~> 2.0.2", require: "rails_rinku"
-gem "rollbar", "~> 2.18.0"
+gem "rollbar", "~> 2.27.0"
 gem "sassc-rails", "~> 2.1.2"
 gem "savon", "~> 2.12.0"
 gem "sitemap_generator", "~> 6.0.2"

Gemfile.lock

@@ -349,7 +349,7 @@ GEM
       tomlrb
     mixlib-shellout (3.1.2)
       chef-utils
-    multi_json (1.13.1)
+    multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     net-scp (1.2.1)
@@ -462,8 +462,7 @@ GEM
     retriable (3.1.2)
     rexml (3.2.4)
     rinku (2.0.4)
-    rollbar (2.18.0)
-      multi_json
+    rollbar (2.27.0)
     rspec-core (3.8.0)
       rspec-support (~> 3.8.0)
     rspec-expectations (3.8.2)
@@ -681,7 +680,7 @@ DEPENDENCIES
   redcarpet (~> 3.4.0)
   responders (~> 2.4.0)
   rinku (~> 2.0.2)
-  rollbar (~> 2.18.0)
+  rollbar (~> 2.27.0)
   rspec-rails (~> 3.8)
   rubocop (~> 0.83.0)
   rubocop-performance (~> 1.6.1)