Allow new clippy lint in test

Author: Veykril

src/tools/rust-analyzer/crates/hir-ty/src/consteval/tests/intrinsics.rs

@@ -426,6 +426,7 @@ fn floating_point() {
             true,
         )),
     );
+    #[allow(unknown_lints, unnecessary_min_or_max)]
     check_number(
         r#"
         extern "rust-intrinsic" {