[CICD] Fuzz test workflow fails

[sea212]

The fuzz test workflow fails with an error:

error[E0658]: use of unstable library feature 'proc_macro_is_available'
--> /home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.33/src/detection.rs:28:21
|
28 | let available = proc_macro::is_available();
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #71436 rust-lang/rust#71436 for more information
= help: add #![feature(proc_macro_is_available)] to the crate attributes to enable