Update nextjs monorepo to v15.2.1 #1323

Job	Run time
Python Code Format and Validation	20s
TypeScript lint checks	1m 56s
Kubernetes integration tests	12m 44s
.NET unit tests (testing-unit-cs)	1m 59s
.NET unit tests (testing-unit-cs-mocks)	2m 7s
DigitalOceanCs integration tests	17m 35s
Go unit tests	2m 45s
.NET unit tests (testing-unit-fs-mocks)	2m 10s
DigitalOceanJs integration tests	4m 51s
DigitalOceanTs integration tests	13m 54s
DigitalOceanPy integration tests	12m 54s
Python unit tests	2m 7s
TypeScript unit tests	1m 54s
DigitalOceanFs integration tests	11m 26s
AwsCs integration tests	7m 38s
AwsJs integration tests	21m 35s
AwsTs integration tests	46m 52s
AwsPy integration tests	11m 6s
AwsFs integration tests	7m 58s
AzureCs integration tests	14m 38s
AzureJs integration tests	4m 56s
AzureTs integration tests	19m 52s
AzurePy integration tests	16m 54s
AzureFs integration tests	15m 24s
GcpCs integration tests	5m 5s
GcpJs integration tests	15m 14s
GcpTs integration tests	8m 33s
GcpPy integration tests	9m 3s
GcpFs integration tests	6m 5s
PacketCs integration tests	5m 0s
PacketJs integration tests	5m 28s
PacketTs integration tests	5m 0s
PacketPy integration tests	6m 12s
PacketFs integration tests	5m 9s
EquinixMetalCs integration tests	5m 59s
EquinixMetalJs integration tests	5m 19s
EquinixMetalTs integration tests	5m 7s
EquinixMetalPy integration tests	5m 23s
EquinixMetalFs integration tests	5m 12s
	5h 53m 24s

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