Dotnet 8.x Update

- updated all nugets to latest 8.x versions
- linting fixes
- switched the application insights to use the connection string.

src/ServerManager.WebApplication/Models/ApiVersion1/ServerStatusResponse.cs

@@ -11,4 +11,4 @@ public class ServerStatusResponse
     [Required]
     [Description("True if the server is available; otherwise false.")]
     public string Available { get; set; } = false.ToString();
-}
+}