Merge pull request #2977 from alphagov/flatten-ga4 #1044

Job	Run time
Lint JavaScript / Run Standardx	13s
Security Analysis / Run Brakeman	12s
Lint SCSS / Run Stylelint	17s
Lint Ruby / Run RuboCop	11s
Test JavaScript / Run Jasmine	39s
Test Ruby / Run Minitest	5m 8s
	6m 40s

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