Bump semver from 7.6.2 to 7.6.3 #11600

Job	Run time
Pre run	3s
Lint: JS	57s
Lint: CSS	55s
E2E test: JS (1, 2)	8m 1s
Lint: PHP	0s
Unit test: JS	1m 5s
E2E test: JS (2, 2)	4m 30s
Static Analysis: PHP	0s
Unit test: PHP 8.0, WP latest	23s
Build: ${{ matrix.build }} build ZIP	0s
Feature tests: PHP ${{ matrix.php }}, WP ${{ matrix.wp }}	0s
Unit test: PHP 8.3, WP trunk	26s
Unit test: PHP 8.2, WP trunk	24s
Unit test: PHP 8.1, WP trunk	24s
Unit test: PHP 8.0, WP trunk	21s
Unit test (with coverage): PHP 8.0, WP latest	26s
Unit test: PHP 8.0, WP latest	25s
Unit test: PHP 7.4, WP latest	23s
Unit test: PHP 7.4, WP latest	22s
Unit test: PHP 7.4, WP 6.3	21s
Unit test: PHP 7.4, WP 6.3	22s
Upload plugin ZIPs to Google Cloud Storage	0s
Comment on PR with links to plugin ZIPs	0s
	19m 48s

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