build: tidy-up memory settings and GHA workflow #14279

Job	Run time
build_storybook	5m 43s
build_storybook	5m 43s
build_storybook	5m 43s
build_storybook	5m 43s
build_and_check	30m 49s
build_and_check	39m 44s
build_and_check	39m 44s
build_and_check	39m 44s
functional_testing	0s
rest-module-testing	0s
rest-module-testing	6m 19s
rest-module-testing	6m 19s
rest-module-testing	6m 19s
functional_testing (true, latest)	54m 57s
functional_testing (true, latest)	53m 2s
functional_testing (true, latest)	52m 8s
functional_testing (true, 12)	53m 5s
functional_testing (true, 12)	52m 57s
functional_testing (true, 12)	52m 37s
functional_testing (false, 12)	46m 38s
functional_testing (false, 12)	46m 38s
functional_testing (false, 12)	46m 38s
	10h 50m 30s

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