[Fix] std::accumulate include in TensorImpl

include/aidge/backend/TensorImpl.hpp

@@ -12,7 +12,7 @@
 #ifndef AIDGE_TENSORIMPL_H_
 #define AIDGE_TENSORIMPL_H_
 
-#include <algorithm>   // std::accumulate
+#include <numeric>     // std::accumulate
 #include <cstddef>     // std::size_t
 #include <functional>  // std::multiplies
 #include <vector>