[CRITICAL BUG] Fix sample result destructor (hotfix) (rapidsai#5306)

Addresses a severe memory leak in sampling caused by a bug in the C API.
The destructor for the sample result object was not properly updated to
cover additional fields that were added later. This resulted in these
fields never being cleaned up, and eventually to an OOM error.

Author: alexbarghi-nv

cpp/src/c_api/sampling_result.cpp

@@ -543,16 +543,23 @@ extern "C" cugraph_error_code_t cugraph_test_sample_result_create(
 extern "C" void cugraph_sample_result_free(cugraph_sample_result_t* result)
 {
   auto internal_pointer = reinterpret_cast<cugraph::c_api::cugraph_sample_result_t*>(result);
+
   delete internal_pointer->major_offsets_;
   delete internal_pointer->majors_;
   delete internal_pointer->minors_;
   delete internal_pointer->edge_id_;
   delete internal_pointer->edge_type_;
   delete internal_pointer->wgt_;
+  delete internal_pointer->edge_start_time_;
+  delete internal_pointer->edge_end_time_;
   delete internal_pointer->hop_;
   delete internal_pointer->label_hop_offsets_;
+  delete internal_pointer->label_type_hop_offsets_;
   delete internal_pointer->label_;
   delete internal_pointer->renumber_map_;
   delete internal_pointer->renumber_map_offsets_;
+  delete internal_pointer->edge_renumber_map_;
+  delete internal_pointer->edge_renumber_map_offsets_;
+
   delete internal_pointer;
 }