Bump actions/github-script from 6 to 7 #1511

Job	Run time
Pre run	3s
Lint: CSS	15s
Feature tests: PHP ${{ matrix.php }}, WP ${{ matrix.wp }}	0s
Build: ${{ matrix.build }} build ZIP	0s
E2E test: JS (1, 2)	4m 49s
Lint: JS	31s
E2E test: JS (2, 2)	4m 1s
Lint: PHP	47s
Static Analysis: PHP	49s
Unit test: JS	34s
Unit test: PHP 8.0, WP latest	27s
Unit test: PHP 8.3, WP trunk	21s
Unit test: PHP 8.2, WP trunk	24s
Unit test: PHP 8.1, WP trunk	23s
Unit test: PHP 8.0, WP trunk	22s
Unit test (with coverage): PHP 8.0, WP latest	25s
Unit test: PHP 8.0, WP latest	25s
Unit test: PHP 7.4, WP latest	24s
Unit test: PHP 7.4, WP latest	25s
Unit test: PHP 7.4, WP 5.3	25s
Unit test: PHP 7.4, WP 5.3	26s
Upload plugin ZIPs to Google Cloud Storage	0s
Comment on PR with links to plugin ZIPs	0s
	16m 16s

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