Bump actions/upload-artifact from 6 to 7 in the actions group #110

Job	Run time
WP Plugin Check (PHP 8.3)	2m 9s
PHPCS (PHP 8.3)	28s
PHPMD (PHP 8.3)	14s
Psalm Static Analysis (PHP 8.3)	17s
PHPStan for WP (PHP 8.3)	22s
WP VIP CS (PHP 8.3)	25s
Security Scan (PHP 8.3)	16s
Test WordPress latest with PHP 8.0	1m 4s
Test WordPress 6.5 with PHP 7.4	1m 12s
Test WordPress nightly with PHP 7.4	1m 15s
Test WordPress latest with PHP 7.4	1m 12s
Test WordPress 6.5 with PHP 8.0	1m 13s
Test WordPress 6.5 with PHP 8.4	1m 7s
Test WordPress 6.5 with PHP 8.3	1m 5s
Test WordPress latest with PHP 8.3	1m 2s
Test WordPress nightly with PHP 8.0	1m 0s
Test WordPress nightly with PHP 8.4	1m 12s
Test WordPress latest with PHP 8.4	1m 11s
Test WordPress nightly with PHP 8.3	1m 5s
	17m 49s

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