zero_repeat_side_effects with sgx_quote3_t

[mythi]

Rust 1.79.0 added zero_repeat_side_effects which triggers an error with:

  --> deps/verifier/src/sgx/types.rs:95:17
   |
95 | #[derive(Debug, Pread)]
   |                 ^^^^^ help: consider using: `Pread; let Pread: [u8; 0] = [];`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_repeat_side_effects
   = note: `#[warn(clippy::zero_repeat_side_effects)]` on by default

which seems to be triggered by pub signature_data: [u8; 0], I'm unsure what the right fix should be (it feels to me the Pread macro needs updating since adding #[warn(clippy::zero_repeat_side_effects)] won't help either) so I'll just submit this issue as a reminder.