Bump capybara from 3.0.3 to 3.1.0

Bumps [capybara](https://github.com/teamcapybara/capybara) from 3.0.3 to 3.1.0.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](teamcapybara/capybara@3.0.3...3.1.0)

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

Gemfile.lock

@@ -4,7 +4,7 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     byebug (10.0.1)
-    capybara (3.0.3)
+    capybara (3.1.0)
       addressable
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)