feat(deps): Upgrade phpseclib to v3 #13544

Job	Run time
changes	5s
integration-sqlite (capabilities_features, 8.1, main)	2m 28s
integration-sqlite (collaboration_features, 8.1, main)	3m 51s
integration-sqlite (comments_features, 8.1, main)	2m 45s
integration-sqlite (dav_features, 8.1, main)	5m 34s
integration-sqlite (features, 8.1, main)	5m 8s
integration-sqlite (federation_features, 8.1, main)	4m 17s
integration-sqlite (--tags ~@large files_features, 8.1, main)	9m 8s
integration-sqlite (filesdrop_features, 8.1, main)	2m 28s
integration-sqlite (openldap_features, 8.1, main)	1m 31s
integration-sqlite (openldap_numerical_features, 8.1, main)	2m 25s
integration-sqlite (ldap_features, 8.1, main)	2m 49s
integration-sqlite (remoteapi_features, 8.1, main)	2m 38s
integration-sqlite (setup_features, 8.1, main)	50s
integration-sqlite (sharees_features, 8.1, main)	3m 31s
integration-sqlite (sharing_features, 8.1, main)	11m 40s
integration-sqlite (videoverification_features, 8.1, main)	3m 19s
integration-sqlite-summary	5s
	1h 4m 32s

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