Update capybara requirement from ~> 2.18 to ~> 3.29

[dependabot-preview]

Updates the requirements on capybara to permit the latest version.

Changelog

Sourced from capybara's changelog.

Version 3.29.0

Release date: Unreleased

Added

• Allow clicking on file input when using the block version of attach_file with Chrome and Firefox
• Spatial filters (left_of, right_of, above, below, near)
• rack_test driver now supports clicking on details elements to open/close them

Fixed

• rack_test driver correctly determines visibility for open details elements descendants

Changed

• Results will now be lazily evaluated when using JRuby >= 9.2.8.0

Version 3.28.0

Release date: 2019-08-03

Added

• Allow forcing HTML5 or legacy dragging via the :html5 option to drag_to when using Selenium with Chrome or Firefox
• Autodetection of drag type interprets not seeing the mousedown event as legacy.
• HTML5 form validation :valid node filter added to :field and :fillable_field selectors
• When using Capybara registered :puma server - patches Puma 4.0.x to fix SSL connection behavior. Removes
  default queue_requests setting - Issue #2227

Version 3.27.0

Release date: 2019-07-28

Added

• Allow to use chromedriver/geckodriver native is_element_displayed endpoint via Selenium
  driver native_displayed option for performance reasons. Disabled by default due to endpoints
  currently not handling <details> element descendants visibility correctly.

Fixed

• Ignore negative lookahead/lookbehind regex when performing initial XPath text matching
• Reloading of elements found via ancestor and sibling
• Only default puma settings to queue_requests: false when using SSL
• Visibility of descendants of <details> elements is correctly determined when using rack_test
  and the selenium driver with Capybara optimized atoms
• local/session storage clearance in Chrome when clearing only one of them - Issue #2233

Version 3.26.0

Release date: 2019-07-15

... (truncated)

Commits

• a5c368f Update README for 3.29_stable branch
• 64ac389 Prepare for 3.29 release
• 6319738 Move common file input click emulation behavior into module
• fdf0095 Update History.md [ci skip]
• 2cf317a Support rack_test driver toggling details elements
• d0ca4bb Fix simple node visibility for open details element descendants
• ad5d347 Remove extraneous focus_ metadata
• 32b2261 Set download directory to work with headless chrome 77
• ea6486b Emulate click on file input when attaching file using Selenium with Chrome an...
• 2e05279 JRuby 9.2.8.0 has been released and no longer needs the lazy results workaround
• Additional commits viewable in compare view

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