ls: update chrono crate version and switch to new_lenient use

Cargo.toml

@@ -276,7 +276,7 @@ binary-heap-plus = "0.5.0"
 bstr = "1.9.1"
 bytecount = "0.6.8"
 byteorder = "1.5.0"
-chrono = { version = "0.4.38", default-features = false, features = [
+chrono = { version = "0.4.41", default-features = false, features = [
   "std",
   "alloc",
   "clock",

src/uu/ls/src/ls.rs

@@ -297,8 +297,11 @@ impl TimeStyler {
             // So it's not yet implemented
             TimeStyle::Locale => StrftimeItems::new("%b %e  %Y").parse(),
             TimeStyle::Format(fmt) => {
-                // TODO (#7802): Replace with new_lenient
-                StrftimeItems::new(custom_tz_fmt::custom_time_format(fmt).as_str()).parse_to_owned()
+                // Box the fmt value to make it static.
+                StrftimeItems::new_lenient(Box::leak(
+                    custom_tz_fmt::custom_time_format(fmt).into_boxed_str(),
+                ))
+                .parse()
             }
         }
         .unwrap();

tests/by-util/test_ls.rs

@@ -5705,3 +5705,13 @@ fn test_time_style_timezone_name() {
         .succeeds()
         .stdout_matches(&re_custom_format);
 }
+
+#[test]
+fn test_unknown_format_specifier() {
+    let re_custom_format = Regex::new(r"[a-z-]* \d* [\w.]* [\w.]* \d+ \d{4} %0 \d{9} f\n").unwrap();
+    let (at, mut ucmd) = at_and_ucmd!();
+    at.touch("f");
+    ucmd.args(&["-l", "--time-style=+%Y %0 %N"])
+        .succeeds()
+        .stdout_matches(&re_custom_format);
+}