fuzzing: use LC_ALL instead of LC_COLLATE

fuzz/fuzz_targets/fuzz_sort.rs

@@ -60,7 +60,7 @@ fuzz_target!(|_data: &[u8]| {
     let rust_result = generate_and_run_uumain(&args, uumain, Some(&input_lines));
 
     // TODO remove once uutils sort supports localization
-    env::set_var("LC_COLLATE", "C");
+    env::set_var("LC_ALL", "C");
     let gnu_result = match run_gnu_cmd(CMD_PATH, &args[1..], false, Some(&input_lines)) {
         Ok(result) => result,
         Err(error_result) => {