Bump govuk_app_config from 9.2.0 to 9.5.0 #306

Job	Run time
Lint Ruby / Run RuboCop	1m 49s
Lint JavaScript / Run Standardx	18s
Lint SCSS / Run Stylelint	15s
Security Analysis / Run Brakeman	1m 58s
Test Ruby / Run RSpec	3m 7s
	7m 27s

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