main: ignore unused imports from configure_me

With Rust 1.75.0, we get an unused import error from
configure_me, which we can't change on our end. We ignore this
warning so the CI runs properly.

src/main.rs

@@ -1,3 +1,4 @@
+#[allow(unused_imports)]
 mod internal {
     #![allow(clippy::enum_variant_names)]
     #![allow(clippy::unnecessary_lazy_evaluations)]