fix(backend-cpu): fix rust lint error

See https://github.com/zama-ai/concrete/actions/runs/6690310177/job/18175401058#step:9:94

compilers/concrete-optimizer/concrete-optimizer/src/global_parameters.rs

@@ -52,6 +52,8 @@ pub struct Range {
     pub end: u64,
 }
 
+#[allow(unknown_lints)]
+#[allow(clippy::into_iter_without_iter)]
 impl IntoIterator for &Range {
     type Item = u64;
 

compilers/concrete-optimizer/concrete-optimizer/src/optimization/dag/multi_parameters/partitions.rs

@@ -18,6 +18,8 @@ pub enum Transition {
 #[derive(Clone, Debug, Default)]
 pub struct InstructionPartition {
     // The partition assigned to the instruction
+    #[allow(unknown_lints)]
+    #[allow(clippy::struct_field_names)]
     pub instruction_partition: PartitionIndex,
     // How the input are made compatible with the instruction partition
     pub inputs_transition: Vec<Option<Transition>>,