fix: Reduce the amount of memory used by the in-memory extension mana…

…ger gRPC server buffer (#3512)

Reduce the amount of memory used by the in-memory gRPC buffer to a
reasonable size.

Signed-off-by: Lior Okman <lior.okman@sap.com>

internal/extension/registry/extension_manager.go

@@ -80,7 +80,7 @@ func NewInMemoryManager(cfg v1alpha1.ExtensionManager, server extension.EnvoyGat
 		return nil, nil, fmt.Errorf("in-memory manager must be passed a server")
 	}
 
-	buffer := 101024 * 1024
+	buffer := 10 * 1024 * 1024
 	lis := bufconn.Listen(buffer)
 
 	baseServer := grpc.NewServer()