refactor(rust): chrono's ParseErrorKind is now public (#17201)

crates/polars-time/src/chunkedarray/string/mod.rs

@@ -2,6 +2,7 @@ pub mod infer;
 use chrono::DateTime;
 mod patterns;
 mod strptime;
+use chrono::format::ParseErrorKind;
 use chrono::ParseError;
 pub use patterns::Pattern;
 #[cfg(feature = "dtype-time")]
@@ -52,24 +53,10 @@ struct ParseErrorByteCopy(ParseErrorKind);
 
 impl From<ParseError> for ParseErrorByteCopy {
     fn from(e: ParseError) -> Self {
-        // We need to do this until chrono ParseErrorKind is public
-        // blocked by https://github.com/chronotope/chrono/pull/588.
-        unsafe { std::mem::transmute(e) }
+        ParseErrorByteCopy(e.kind())
     }
 }
 
-#[allow(dead_code)]
-enum ParseErrorKind {
-    OutOfRange,
-    Impossible,
-    NotEnough,
-    Invalid,
-    /// The input string has been prematurely ended.
-    TooShort,
-    TooLong,
-    BadFormat,
-}
-
 fn get_first_val(ca: &StringChunked) -> PolarsResult<&str> {
     let idx = ca.first_non_null().ok_or_else(|| {
         polars_err!(ComputeError: