Bump sentry-raven from 2.12.3 to 2.13.0 (#1501)

Bumps [sentry-raven](https://github.com/getsentry/raven-ruby) from 2.12.3 to 2.13.0.
- [Release notes](https://github.com/getsentry/raven-ruby/releases)
- [Changelog](https://github.com/getsentry/raven-ruby/blob/master/changelog.md)
- [Commits](getsentry/sentry-ruby@v2.12.3...v2.13.0)

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

Gemfile.lock

@@ -92,7 +92,7 @@ GEM
       railties (>= 4.2.0)
     faker (2.9.0)
       i18n (>= 1.6, < 1.8)
-    faraday (0.17.0)
+    faraday (0.17.1)
       multipart-post (>= 1.2, < 3)
     ffi (1.11.3)
     formulaic (0.4.1)
@@ -211,7 +211,7 @@ GEM
       sprockets-rails
       tilt
     selectize-rails (0.12.6)
-    sentry-raven (2.12.3)
+    sentry-raven (2.13.0)
       faraday (>= 0.7.6, < 1.0)
     shoulda-matchers (4.1.2)
       activesupport (>= 4.2.0)