Bump Microsoft.AspNetCore.SignalR.Client from 8.0.11 to 8.0.12 in /src #6041

Job	Run time
Windows-Default	12m 44s
containers	0s
Windows-SqlServer	7m 24s
Windows-AzureServiceBus	11m 1s
db-container	0s
windows-installers	0s
Windows-RabbitMQ	8m 20s
Windows-AzureStorageQueues	5m 52s
Windows-MSMQ	4m 55s
Windows-SQS	7m 0s
Windows-PrimaryRavenAcceptance	12m 56s
Windows-PrimaryRavenPersistence	6m 26s
Windows-PostgreSQL	8m 38s
Linux-Default	9m 54s
Linux-SqlServer	4m 20s
Linux-AzureServiceBus	9m 45s
Linux-RabbitMQ	3m 32s
Linux-AzureStorageQueues	4m 2s
Linux-SQS	5m 28s
container-test	0s
Linux-PrimaryRavenAcceptance	10m 23s
Linux-PrimaryRavenPersistence	4m 39s
Linux-PostgreSQL	3m 12s
	2h 20m 31s

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