Update test suite to nightly-2024-03-04

Author: dtolnay

tests/common/eq.rs

@@ -550,7 +550,7 @@ spanless_eq_enum!(ClosureBinder; NotPresent For(span generic_params));
 spanless_eq_enum!(Const; Yes(0) No);
 spanless_eq_enum!(Defaultness; Default(0) Final);
 spanless_eq_enum!(Extern; None Implicit(0) Explicit(0 1));
-spanless_eq_enum!(FloatTy; F32 F64);
+spanless_eq_enum!(FloatTy; F16 F32 F64 F128);
 spanless_eq_enum!(FnRetTy; Default(0) Ty(0));
 spanless_eq_enum!(ForLoopKind; For ForAwait);
 spanless_eq_enum!(ForeignItemKind; Static(0 1 2) Fn(0) TyAlias(0) MacCall(0));