Prevent PRs outside of TryGhost org from attempting browser tests #8552

Job	Run time
Metadata	10s
Install Dependencies	2m 2s
Admin tests - Chrome	3m 9s
i18n	27s
Lint	20s
Regression tests (Node 18.12.1, mysql8)	3m 26s
Regression tests (Node 18.12.1, sqlite3)	1m 56s
Database tests (Node 18.12.1, mysql8)	6m 26s
Unit tests (Node 18.12.1)	29s
Performance tests	0s
Database tests (Node 20.11.1, mysql8)	6m 2s
Unit tests (Node 20.11.1)	20s
Database tests (Node 18.12.1, sqlite3)	3m 42s
Admin-X Settings tests	4m 35s
Ghost-CLI tests	4m 11s
Comments-UI tests	1m 37s
Signup-form tests	1m 35s
Browser tests	11m 21s
Coverage	14s
All required tests passed or skipped	1s
Canary	0s
	52m 3s

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