Add renaming import to test.

Co-Authored-By: Philipp Krones <hello@philkrones.com>

tests/ui/single_component_path_imports.rs

@@ -3,6 +3,7 @@
 #![warn(clippy::single_component_path_imports)]
 
 use regex;
+use serde as edres;
 
 fn main() {
     regex::Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();