Update capybara requirement from ~> 2.4 to ~> 3.13

[dependabot-preview[bot]]

Updates the requirements on capybara to permit the latest version.

Changelog

*Sourced from [capybara's changelog](https://github.com/teamcapybara/capybara/blob/master/History.md).* > # Version 3.13.2 > Release date: 2019-01-24 > > ### Fixed > > * Remove extraneous output > > # Version 3.13.1 > Release date: 2019-01-24 > > ### Fixed > > * Only use Selenium visibility optimization when JS atom is available - Issue [#2151](https://github-redirect.dependabot.com/teamcapybara/capybara/issues/2151) > > # Version 3.13.0 > Release date: 2019-01-23 > > ### Added > > * Session#quit added > * #scroll_to added to allow scrolling page/elements to specified locations > * Speed optimizations around multiple element location and path generation when using the Selenium driver > * Support for locator type checking in custom selectors > * Allow configuration of gumbo use - defaults to off > * `assert_style`/`has_style`/`have_style` deprecated in favor of `assert_matches_style`/`matches_styles?`/`match_style` > * :style filter added to selectors > > # Version 3.12.0 > Release date: 2018-11-28 > > ### Added > > * Support Ruby 2.6 endless range in Result#[] and query `:between` option > * Pre-registered headless firefox driver :selenium_headless [Andrew Havens] > * Selenium driver now defaults to clearing `sessionStorage` and `localStorage`. To disable pass `clear_local_storage: false` and/or `clear_session_storage: false` when creating Capybara::Selenium::Driver instance in your driver registration > > ### Fixed > > * Raise error if only :x or :y are passed as an offset to click methods > > ### Removed > > * Support for RSpec < 3.5 > > # Version 3.11.1 > Release date: 2018-11-16 > > ### Fixed > > * Fixed :link_or_button XPath generation when it has had an expression filter added > ... (truncated)

Commits

- See full diff in [compare view](https://github.com/teamcapybara/capybara/commits/3.13.2)

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[dependabot-preview[bot]]

Superseded by #70.