Fix MetaOperator test

Context

The signature of Leaky metaoperator was changed in aidge_core to include an additional parameter for the reset type (see aidge_core!344 (merged)).

This MR takes those changes into account in the MetaOperator tests.

unit_tests/operator/Test_MetaOperator.cpp

@@ -705,7 +705,7 @@ TEST_CASE("[cpu/operator] MetaOperator", "[MetaOperator][CPU]") {
         auto fc2 = FC(outChannels, inChannels, true, "fc2");
         // NOTE: Account for init step by adding 1 to the max timestep
         // parameter.
-        auto lif1 = Leaky(nbTimeSteps + 1, beta, threshold, "leaky");
+        auto lif1 = Leaky(nbTimeSteps + 1, beta, threshold, LeakyReset::Subtraction, "leaky");
 
         // associateInput() does not work
         fc1->input(1).first->getOperator()->setOutput(0, myWeights);
@@ -774,7 +774,7 @@ TEST_CASE("[cpu/operator] MetaOperator", "[MetaOperator][CPU]") {
         const auto nbTimeSteps = dims[0];
         const auto beta = betaDist(gen);
 
-        auto myLeaky = Leaky(nbTimeSteps, beta, 1.0, "leaky");
+        auto myLeaky = Leaky(nbTimeSteps, beta, 1.0, LeakyReset::Subtraction, "leaky");
         auto op =
             std::static_pointer_cast<MetaOperator_Op>(myLeaky->getOperator());
         // auto stack = Stack(2);