build: update dependency postcss to v8.5.25 #3320

Job	Run time
build-e2e-windows	31s
lint	2m 21s
build	34s
e2e-windows	0s
Browser Compatibility Tests	0s
publish-snapshots	0s
test	0s
e2e-snapshots	0s
e2e-package-managers	0s
e2e	0s
	3m 26s

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