Bump skylight from 2.0.2 to 3.0.0

Bumps [skylight](https://github.com/skylightio/skylight-ruby) from 2.0.2 to 3.0.0.
- [Release notes](https://github.com/skylightio/skylight-ruby/releases)
- [Changelog](https://github.com/skylightio/skylight-ruby/blob/master/CHANGELOG.md)
- [Commits](skylightio/skylight-ruby@v2.0.2...v3.0.0)

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

Gemfile.lock

@@ -303,9 +303,9 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    skylight (2.0.2)
-      skylight-core (= 2.0.2)
-    skylight-core (2.0.2)
+    skylight (3.0.0)
+      skylight-core (= 3.0.0)
+    skylight-core (3.0.0)
       activesupport (>= 4.2.0)
     slim (3.0.9)
       temple (>= 0.7.6, < 0.9)