fix(deps): upgrade rprompt to 2.1.1

Migration was applied, adapting `fastmod`
to `rprompt` API changes:

<https://github.com/conradkleinespel/rprompt/releases/tag/v2.0.2>

Cargo.toml

@@ -20,7 +20,7 @@ grep = "0.2.5"
 ignore = "0.4.1"
 num_cpus = "1.8.0"
 regex = "1.5.5"
-rprompt = "1.0.3"
+rprompt = "2.1.1"
 
 [dev-dependencies]
 assert_cmd = "2"

src/main.rs

@@ -54,8 +54,7 @@ use regex::RegexBuilder;
 
 mod terminal;
 
-use rprompt::prompt_reply_stderr;
-use rprompt::prompt_reply_stdout;
+use rprompt::prompt_reply_from_bufread;
 
 use crate::terminal::Color;
 
@@ -126,7 +125,12 @@ fn looks_like_code(path: &Path) -> bool {
 
 fn prompt(prompt_text: &str, letters: &str, default: Option<char>) -> Result<char> {
     loop {
-        let input = prompt_reply_stdout(prompt_text).context("Unable to read user input")?;
+        let input = prompt_reply_from_bufread(
+            &mut std::io::stdin().lock(),
+            &mut std::io::stdout(),
+            prompt_text,
+        )
+        .context("Unable to read user input")?;
         if input.is_empty() && default.is_some() {
             return Ok(default.unwrap());
         }
@@ -886,11 +890,15 @@ compatibility with the original codemod.",
         .build()
         .with_context(|| format!("Unable to make regex from {}", regex_str))?;
     if regex.is_match("") {
-        let _ = prompt_reply_stderr(&format!(
-            "Warning: your regex {:?} matches the empty string. This is probably
-not what you want. Press Enter to continue anyway or Ctrl-C to quit.",
-            regex,
-        ))?;
+        let _ = prompt_reply_from_bufread(
+            &mut std::io::stdin().lock(),
+            &mut std::io::stderr(),
+            &format!(
+                "Warning: your regex {:?} matches the empty string. This is probably
+    not what you want. Press Enter to continue anyway or Ctrl-C to quit.",
+                regex,
+            ),
+        )?;
     }
     let matcher = RegexMatcherBuilder::new()
         .case_insensitive(ignore_case)