Update grunt-contrib-qunit requirement from ^0.5.2 to ^3.1.0

[dependabot-preview]

Updates the requirements on grunt-contrib-qunit to permit the latest version.

Changelog

Sourced from grunt-contrib-qunit's changelog.

v3.1.0:
date: 2018-12-29
changes:
- Updated to puppeteer ^1.11.0.
v3.0.1:
date: 2018-08-12
changes:
- Fixed regressions.
v3.0.0:
date: 2018-07-24
changes:
- Switch to using headless chrome / puppeteer instead of phantomjs
v2.0.0:
date: 2017-04-04
changes:
- Remove usage of QUnit.jsDump
- Upgrade qunitjs to 2.3.0 (#123)
- adding an Introduction to the README (#140)
v1.3.0:
date: 2017-02-07
changes:
- Add ability to run tests in seeded-random order through --seed flag
- Add note about min version of QUnit required to use the CLI flags
- Implement support for todo tests and revamp reporting logic (#137)
v1.2.0:
date: 2016-04-14
changes:
- Add support for filtering running modules using command line (--modules)
- Removed 'grunt.warn' output from error.onError handler, onus now on end user binding to event.
- Update docs.
v1.1.0:
date: 2016-03-11
changes:
- Adding support for 'summaryOnly'.
- Fix options.force.
- Fix query string for noGlobals.
- Update docs.
v1.0.1:
date: 2016-02-05
changes:
- Change QUnit.jsDump to QUnit.dump.
v1.0.0:
date: 2016-02-05
changes:
- Update grunt-lib-phantomjs to 1.0.0, effectively upgrading to phantomjs 2.x.
- Remove grunt as a peerDependency.
v0.7.0:
date: 2015-04-03
changes:
- Log PhantomJS errors as warnings.

... (truncated)

Commits

• ee65845 Merge pull request #156 from gruntjs/tag-3.1.0
• c3878e6 v3.1.0
• b8b191f Merge pull request #155 from Krinkle/wintest
• 0baff9f Update puppeteer to 1.11.0 with caret range
• 9180a0f CI: Add Windows to Travis CI matrix
• 82d8dd9 Switch to qunit.
• be41c2a Update grunt-contrib-connect to v2.0.0. (#152)
• 04014b2 Update all the stuff. (#151)
• a4be5b5 v3.0.1
• 2dbb2fe Fix regressions introduced in #147 (#150)
• Additional commits viewable in compare view

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