Bump PHP-CSS-Parser to v8.5.1 #11367

Job	Run time
Pre run	3s
E2E test: JS (1, 2)	10m 53s
Lint: CSS	0s
Build: dev build ZIP	1m 5s
Feature tests: PHP 7.4, WP latest	1m 46s
E2E test: JS (2, 2)	9m 56s
Feature tests: PHP 8.3, WP trunk	1m 49s
Build: prod build ZIP	1m 25s
Feature tests: PHP 8.2, WP trunk	1m 46s
Feature tests: PHP 8.1, WP trunk	1m 51s
Lint: JS	38s
Feature tests: PHP 8.0, WP latest	1m 52s
Lint: PHP	45s
Feature tests: PHP 7.4, WP 5.3	1m 36s
Static Analysis: PHP	49s
Unit test: JS	38s
Unit test: PHP 8.0, WP latest	2m 34s
Unit test: PHP 8.3, WP trunk	2m 22s
Unit test: PHP 8.2, WP trunk	2m 15s
Unit test: PHP 8.1, WP trunk	2m 17s
Unit test: PHP 8.0, WP trunk	2m 23s
Unit test (with coverage): PHP 8.0, WP latest	3m 55s
Unit test: PHP 8.0, WP latest	1m 26s
Unit test: PHP 7.4, WP latest	1m 57s
Unit test: PHP 7.4, WP latest	1m 29s
Unit test: PHP 7.4, WP 5.3	1m 53s
Unit test: PHP 7.4, WP 5.3	1m 31s
Upload plugin ZIPs to Google Cloud Storage	25s
Comment on PR with links to plugin ZIPs	4s
	1h 1m 23s

Provide feedback