[management] Add validate flow response (#4172)

This PR adds a validate flow response feature to the management server by integrating an IntegratedValidator component. The main purpose is to enable validation of PKCE authorization flows through an integrated validator interface.

- Adds a new ValidateFlowResponse method to the IntegratedValidator interface
- Integrates the validator into the management server to validate PKCE authorization flows
- Updates dependency version for management-integrations

management/server/management_test.go

@@ -206,7 +206,7 @@ func startServer(
 		eventStore,
 		nil,
 		false,
-		server.MocIntegratedValidator{},
+		server.MockIntegratedValidator{},
 		metrics,
 		port_forwarding.NewControllerMock(),
 		settingsMockManager,
@@ -227,6 +227,7 @@ func startServer(
 		nil,
 		nil,
 		nil,
+		server.MockIntegratedValidator{},
 	)
 	if err != nil {
 		t.Fatalf("failed creating management server: %v", err)