chore(renovate): align schedule and add onboarding guardrails

renovate.json

@@ -12,6 +12,8 @@
 	"osvVulnerabilityAlerts": true,
 	"configMigration": true,
 	"automergeStrategy": "squash",
+	"schedule": ["after 4:00 am and before 5:00 am on monday through friday", "at 4:17 am on monday through friday"],
+	"timezone": "Europe/Amsterdam",
 	"prConcurrentLimit": 5,
 	"prHourlyLimit": 3,
 	"minimumReleaseAge": "3 days",