Bump postcss-nested from 6.0.1 to 7.0.2 #11655

Job	Run time
Pre run	6s
Lint: CSS	51s
Lint: JS	1m 10s
Unit test: JS	57s
Static Analysis: PHP	0s
Lint: PHP	0s
E2E test: JS (1, 2)	8m 25s
E2E test: JS (2, 2)	4m 53s
Unit test: PHP 8.0, WP latest	25s
Unit test: PHP 8.3, WP trunk	24s
Build: ${{ matrix.build }} build ZIP	0s
Feature tests: PHP ${{ matrix.php }}, WP ${{ matrix.wp }}	0s
Unit test: PHP 8.2, WP trunk	22s
Unit test: PHP 8.1, WP trunk	20s
Unit test: PHP 8.0, WP trunk	24s
Unit test (with coverage): PHP 8.0, WP latest	23s
Unit test: PHP 8.0, WP latest	22s
Unit test: PHP 7.4, WP latest	20s
Unit test: PHP 7.4, WP latest	21s
Unit test: PHP 7.4, WP 6.5	25s
Unit test: PHP 7.4, WP 6.5	26s
Upload plugin ZIPs to Google Cloud Storage	0s
Comment on PR with links to plugin ZIPs	0s
	20m 34s

Provide feedback