Merge pull request #2347 from alphagov/dependabot/bundler/minitest-5.… #934

Job	Run time
Test Ruby	8m 15s
Security Analysis / Run Brakeman	23s
Lint SCSS / Run Stylelint	16s
Lint JavaScript / Run Standardx	16s
Lint Ruby / Run RuboCop	35s
Test JavaScript / Run Jasmine	1m 16s
	11m 1s

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