message: fixup! Upgrade clap to 4.0
  Change ArgMatches::get_many::<&str> to
  ArgMatches::get_many::<String> in values_of to fix "Could not
  downcast to &str, need to downcast to alloc::string::String"
diff: @@ -541,11 +541,11 @@ impl<'a> SubCmdArgs<'a> {
  }
  }
  - pub fn values_of(&self, key: &str) -> Option<ValuesRef<&str>> {
  - if let Some(v) = self.subargs.get_many::<&str>(key) {
  + pub fn values_of(&self, key: &str) -> Option<ValuesRef<String>> {
  + if let Some(v) = self.subargs.get_many::<String>(key) {
  Some(v)
  } else {
  - self.args.get_many::<&str>(key)
  + self.args.get_many::<String>(key)
  }
  }
  