[skip-changelog] Relaxed test constraints (#2279)

I see an increase in trainsient CI failures for this test. Let's try
to increase the timeout to see if solves the problem.

Author: cmaglie

Diff for: internal/integrationtest/daemon/daemon_concurrency_test.go

@@ -45,7 +45,7 @@ func TestArduinoCliDaemonCompileWithLotOfOutput(t *testing.T) {
 	require.NoError(t, err)
 
 	testCompile := func() {
-		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
 		defer cancel()
 		compile, err := grpcInst.Compile(ctx, "arduino:avr:uno", sketchPath.String(), "all")
 		require.NoError(t, err)