feat: update dependencies

src/cli.rs

@@ -1,4 +1,6 @@
 use std::io::Write;
+use base64::Engine;
+use base64::engine::general_purpose::STANDARD;
 
 use clap::{App, Arg, ArgMatches, SubCommand};
 use hyper::{Body, Client, Method, Request, Response, StatusCode};
@@ -191,7 +193,7 @@ fn do_offline_init(_arg_matches: &ArgMatches<'_>, _sub_arg_matches: &ArgMatches<
         hex::decode(&hex)?
     } else if line.starts_with("base64:") {
         let base64: String = line.chars().skip(7).collect();
-        base64::decode(&base64)?
+        STANDARD.decode(&base64)?
     } else {
         line.as_bytes().to_vec()
     };