Bump php-stubs/wordpress-stubs from 6.2.1 to 6.3.0 #1447

Job	Run time
Pre run	4s
Normalize composer.json	12s
Lint: JS	0s
Lint: CSS	0s
Lint: PHP	1m 33s
E2E test: JS	9m 57s
Feature test: PHP 7.4, WP latest	4m 32s
Feature test: PHP 7.3, WP latest	3m 20s
Feature test: PHP 7.2, WP latest	3m 34s
Feature test: PHP 7.1, WP latest	3m 19s
Feature test: PHP 8.1, WP trunk	4m 46s
Feature test: PHP 8.0, WP latest	4m 31s
Feature test: PHP 7.0, WP 5.1	3m 55s
Static Analysis: PHP	1m 27s
Unit test: JS	0s
Unit test: PHP 8.0, WP latest	3m 51s
Unit test: PHP 8.0, WP trunk	4m 46s
Unit test: PHP 8.1, WP trunk	3m 51s
Unit test: PHP 8.2, WP trunk	4m 35s
Unit test (with coverage): PHP 8.0, WP latest	7m 59s
Unit test: PHP 8.0, WP latest	4m 4s
Unit test: PHP 7.4, WP latest	5m 7s
Unit test: PHP 7.4, WP latest	3m 54s
Unit test: PHP 7.3, WP latest	4m 38s
Unit test: PHP 7.2, WP latest	4m 43s
Unit test: PHP 7.1, WP latest	3m 48s
Unit test: PHP 7.0, WP 5.1	3m 54s
Unit test: PHP 7.0, WP 5.0	4m 1s
Unit test: PHP 7.0, WP 4.9	3m 36s
Build: ${{ matrix.build }} build ZIP	0s
Upload plugin ZIPs to Google Cloud Storage	0s
Comment on PR with links to plugin ZIPs	0s
	1h 43m 57s

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