Bump govuk_publishing_components from 37.7.1 to 37.8.0 #1330

Job	Run time
Integration tests	50s
CodeQL SAST scan / Analyze	1m 57s
Dependency Review scan / dependency-review-push	0s
Dependency Review scan / dependency-review-pr	5s
Lint ERB / Lint ERB	24s
Lint JavaScript / Run Standardx	14s
Lint Ruby / Run RuboCop	31s
Lint SCSS / Run Stylelint	11s
Run Pact tests / Verify pact tests	49s
Security Analysis / Run Brakeman	27s
SNYK security analysis / sast	33s
SNYK security analysis / sca	16s
Test JavaScript / Run Jasmine	52s
Test Ruby / Run RSpec	1m 4s
	8m 13s

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