Replace deprecated code

common/client-libs/validator-client/src/nyxd/cosmwasm_client/helpers.rs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use crate::nyxd::error::NyxdError;
+use base64::Engine;
 use cosmrs::abci::TxMsgData;
 use cosmrs::cosmwasm::MsgExecuteContractResponse;
 use cosmrs::proto::cosmos::base::query::v1beta1::{PageRequest, PageResponse};
@@ -16,7 +17,7 @@ pub fn parse_msg_responses(data: Bytes) -> Vec<MsgResponse> {
     // it seems that currently, on wasmd 0.43 + tendermint-rs 0.37 + cosmrs 0.17.0-pre
     // the data is left in undecoded base64 form, but I'd imagine this might change so if the decoding fails,
     // use the bytes directly instead
-    let data = if let Ok(decoded) = base64::decode(&data) {
+    let data = if let Ok(decoded) = base64::prelude::BASE64_STANDARD.decode(&data) {
         decoded
     } else {
         error!("failed to base64-decode the 'data' field of the TxResponse - has the chain been upgraded and introduced some breaking changes?");

common/client-libs/validator-client/src/rpc/reqwest.rs

@@ -3,6 +3,7 @@
 
 use crate::rpc::TendermintRpcClient;
 use async_trait::async_trait;
+use base64::Engine;
 use cosmrs::tendermint::{block::Height, evidence::Evidence, Hash};
 use reqwest::header::HeaderMap;
 use reqwest::{header, RequestBuilder};
@@ -13,7 +14,6 @@ use tendermint_rpc::{
     query::Query,
     Error, Order, Response, SimpleRequest,
 };
-
 use url::Url;
 
 // copied macro from tendermint-rpc crate because that's exactly what we have to do here too
@@ -206,7 +206,7 @@ pub fn extract_authorization(url: &Url) -> Option<String> {
 
     let authority = url.authority();
     if let Some((userpass, _)) = authority.split_once('@') {
-        Some(base64::encode(userpass))
+        Some(base64::prelude::BASE64_STANDARD.encode(userpass))
     } else {
         None
     }