rust: ignore more lints on the generated file

warnings appear with rust 1.89

Signed-off-by: Tristram Gräbener <tristram+git@tristramg.eu>

Author: Tristramg

src/lib.rs

@@ -1,6 +1,7 @@
 #[allow(unused_imports)]
 #[allow(clippy::all)]
 #[allow(dead_code)]
+#[allow(mismatched_lifetime_syntaxes)]
 #[rustfmt::skip]
 mod lrs_generated;