fix(deps): bump @nextcloud/dialogs from 5.3.8 to v6 (main) - autoclosed #6338

Job	Run time
php8.1 on master integration tests	36s
php8.1 on master unit tests	51s
php8.1 on stable30 integration tests	31s
php8.1 on stable30 unit tests	39s
php8.2 on master integration tests	30s
php8.2 on master unit tests	1m 2s
php8.2 on stable30 integration tests	38s
php8.2 on stable30 unit tests	45s
php8.3 on master unit tests	1m 1s
php8.3 on master integration tests	35s
php8.3 on stable30 integration tests	46s
php8.3 on stable30 unit tests	1m 1s
php8.4 on master unit tests	1m 25s
php8.4 on master integration tests	1m 22s
php-test-summary	5s
	11m 47s

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