Fixed members/signin_urls endpoint to take admin api key #12888

Job	Run time
Setup	2m 13s
i18n	28s
Lint	3m 21s
Admin tests - Chrome	0s
Database tests (Node 18.12.1, mysql8)	6m 2s
Browser tests	0s
Performance tests	0s
Database tests (Node 20.11.1, mysql8)	5m 53s
Regression tests (Node 18.12.1, mysql8)	3m 9s
Database tests (Node 18.12.1, sqlite3)	3m 19s
Unit tests (Node 18.12.1)	2m 48s
Regression tests (Node 18.12.1, sqlite3)	1m 45s
Unit tests (Node 20.11.1)	2m 43s
Admin-X Settings tests	0s
Comments-UI tests	0s
Ghost-CLI tests	4m 14s
Signup-form tests	0s
Publish @tryghost/admin-x-activitypub	0s
All required tests passed or skipped	1s
Coverage	0s
Canary	0s
	35m 56s

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