fix boost bind placeholders

for for boost 1.78 eg.:

crocoddyl/unittest/test_contacts.cpp:170:114: error: '_2' was not declared in this scope
  170 |   reevals.push_back(boost::bind(&crocoddyl::unittest::updateAllPinocchio, &pinocchio_model, &pinocchio_data, _1, _2));
      |                                                                                                                  ^~

unittest/test_contacts.cpp

@@ -146,6 +146,9 @@ void test_update_force_diff(ContactModelTypes::Type contact_type, PinocchioModel
 
 void test_partial_derivatives_against_numdiff(ContactModelTypes::Type contact_type,
                                               PinocchioModelTypes::Type model_type) {
+#if BOOST_VERSION / 100 % 1000 >= 60
+  using namespace boost::placeholders;
+#endif
   // create the model
   ContactModelFactory factory;
   boost::shared_ptr<crocoddyl::ContactModelAbstract> model = factory.create(contact_type, model_type);

unittest/test_costs.cpp

@@ -92,6 +92,9 @@ void test_calc_against_numdiff(CostModelTypes::Type cost_type, StateModelTypes::
 
 void test_partial_derivatives_against_numdiff(CostModelTypes::Type cost_type, StateModelTypes::Type state_type,
                                               ActivationModelTypes::Type activation_type) {
+#if BOOST_VERSION / 100 % 1000 >= 60
+  using namespace boost::placeholders;
+#endif
   // create the model
   CostModelFactory factory;
   const boost::shared_ptr<crocoddyl::CostModelAbstract>& model =

unittest/test_costs_noFF.cpp

@@ -98,6 +98,9 @@ void test_calc_against_numdiff(CostModelNoFFTypes::Type cost_type, ActivationMod
 
 void test_partial_derivatives_against_numdiff(CostModelNoFFTypes::Type cost_type,
                                               ActivationModelTypes::Type activation_type) {
+#if BOOST_VERSION / 100 % 1000 >= 60
+  using namespace boost::placeholders;
+#endif
   // create the model
   CostModelFactory factory;
   const boost::shared_ptr<crocoddyl::CostModelAbstract>& model = factory.create(cost_type, activation_type);

unittest/test_residuals.cpp

@@ -63,6 +63,9 @@ void test_calc_returns_a_residual(ResidualModelTypes::Type residual_type, StateM
 
 void test_calc_against_numdiff(ResidualModelTypes::Type residual_type, StateModelTypes::Type state_type,
                                ActuationModelTypes::Type actuation_type) {
+#if BOOST_VERSION / 100 % 1000 >= 60
+  using namespace boost::placeholders;
+#endif
   // Create the model
   ResidualModelFactory residual_factory;
   ActuationModelFactory actuation_factory;
@@ -108,6 +111,9 @@ void test_calc_against_numdiff(ResidualModelTypes::Type residual_type, StateMode
 
 void test_partial_derivatives_against_numdiff(ResidualModelTypes::Type residual_type, StateModelTypes::Type state_type,
                                               ActuationModelTypes::Type actuation_type) {
+#if BOOST_VERSION / 100 % 1000 >= 60
+  using namespace boost::placeholders;
+#endif
   // Create the model
   ResidualModelFactory residual_factory;
   ActuationModelFactory actuation_factory;