Rust Polars v0.41.2 build fails

[TaoVonQi]

Checks

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of Polars.

Reproducible example

cargo build

Log output

error[E0432]: unresolved import `regex`
  --> .cargo/registry/src/index.crates.io-6f17d22bba15001f/polars-plan-0.41.2/src/dsl/function_expr/strings.rs:11:5
   |
11 | use regex::{escape, Regex};
   |     ^^^^^ use of undeclared crate or module `regex`

For more information about this error, try `rustc --explain E0432`.
error: could not compile `polars-plan` (lib) due to 1 previous error

Issue description

Build Polars v0.41.2 without the regex feature

Expected behavior

Builds successfully.

Installed versions

polars = { version = "0.41", features = ["abs", "propagate_nans", "rank", "dynamic_group_by", "performant",
"ndarray" ,"lazy", "dtype-time", "dtype-datetime", "parquet", "strings"] }