Auto merge of rust-lang#13863 - danieleades:approx-constant, r=Veykril

minor: suppress 'clippy::approx_constant' lint in test case

suppresses a false positive clippy lint

Author: bors

crates/syntax/src/ast/token_ext.rs

@@ -481,7 +481,7 @@ bcde", b"abcde",
 
     #[test]
     fn test_value_underscores() {
-        check_float_value("3.141592653589793_f64", 3.141592653589793_f64);
+        check_float_value("1.234567891011121_f64", 1.234567891011121_f64);
         check_float_value("1__0.__0__f32", 10.0);
         check_int_value("0b__1_0_", 2);
         check_int_value("1_1_1_1_1_1", 111111);