Update dependency microdiff to v1.5.0 #15300

Job	Run time
Setup	3m 15s
Admin tests - Chrome	3m 41s
Lint	3m 29s
i18n	26s
Browser tests	0s
Performance tests	0s
Database tests (Node 18.12.1, mysql8)	6m 20s
Database tests (Node 20.11.1, mysql8)	6m 4s
Regression tests (Node 20.11.1, mysql8)	3m 13s
Unit tests (Node 18.12.1)	3m 31s
Regression tests (Node 20.11.1, sqlite3)	1m 50s
Database tests (Node 20.11.1, sqlite3)	3m 21s
Unit tests (Node 20.11.1)	3m 24s
Admin-X Settings tests	5m 10s
Comments-UI tests	1m 41s
Ghost-CLI tests	4m 2s
Signup-form tests	1m 8s
Publish @tryghost/admin-x-activitypub	0s
Coverage	8s
All required tests passed or skipped	1s
Canary	0s
	50m 44s

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