Update nextjs monorepo to v15.1.5 (#6184) #2119

Job	Run time
Build and push HASH api image	6m 50s
Build and push HASH graph image	21m 30s
Build and push Hydra image	35s
Build and push Kratos image	56s
Build and push Temporal TS AI Worker	10m 1s
Build and push Temporal integration Worker	11m 10s
Build and push Temporal Migrate image	37s
Build and push Temporal Setup image	38s
Deploy Temporal images	19s
Deploy HASH app images	17s
Deploy HASH worker images	20s
Deploy HASH graph images	19s
Notify Slack on failure	0s
	53m 32s

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