Update monero-wallet-rpc to 0.18.3.1 to enable further testing of fee…

… code

0.18.3.1 includes monero-project/monero#8882, a
necessary requirement. Doesn't bump any of the nodes due to 0.18.3.0 being
recently released, without clear reason to update.

.github/actions/monero-wallet-rpc/action.yml

@@ -5,7 +5,7 @@ inputs:
   version:
     description: "Version to download and run"
     required: false
-    default: v0.18.2.0
+    default: v0.18.3.1
 
 runs:
   using: "composite"

coins/monero/tests/wallet2_compatibility.rs

@@ -11,7 +11,7 @@ use monero_serai::{
   wallet::{
     address::{Network, AddressSpec, SubaddressIndex, MoneroAddress},
     extra::{MAX_TX_EXTRA_NONCE_SIZE, Extra},
-    Scanner,
+    Scanner, FeePriority,
   },
 };
 
@@ -88,13 +88,12 @@ async fn from_wallet_rpc_to_self(spec: AddressSpec) {
     .unwrap();
   let tx_hash = hex::decode(tx.tx_hash).unwrap().try_into().unwrap();
 
-  // TODO: Needs https://github.com/monero-project/monero/pull/8882
-  // let fee_rate = daemon_rpc
-  //   // Uses `FeePriority::Low` instead of `FeePriority::Lowest` because wallet RPC
-  //   // adjusts `monero_rpc::TransferPriority::Default` up by 1
-  //   .get_fee(daemon_rpc.get_protocol().await.unwrap(), FeePriority::Low)
-  //   .await
-  //   .unwrap();
+  let fee_rate = daemon_rpc
+    // Uses `FeePriority::Low` instead of `FeePriority::Lowest` because wallet RPC
+    // adjusts `monero_rpc::TransferPriority::Default` up by 1
+    .get_fee(daemon_rpc.get_protocol().await.unwrap(), FeePriority::Low)
+    .await
+    .unwrap();
 
   // unlock it
   runner::mine_until_unlocked(&daemon_rpc, &wallet_rpc_addr, tx_hash).await;
@@ -109,8 +108,7 @@ async fn from_wallet_rpc_to_self(spec: AddressSpec) {
   let tx = daemon_rpc.get_transaction(tx_hash).await.unwrap();
   let output = scanner.scan_transaction(&tx).not_locked().swap_remove(0);
 
-  // TODO: Needs https://github.com/monero-project/monero/pull/8882
-  // runner::check_weight_and_fee(&tx, fee_rate);
+  runner::check_weight_and_fee(&tx, fee_rate);
 
   match spec {
     AddressSpec::Subaddress(index) => assert_eq!(output.metadata.subaddress, Some(index)),