workspace: inherit lints in: ed448-goldilocks, hash2curve, x448

[dishmaker]

This pops up on newest cargo 1.101.0-nightly (f3865b2a4 2026-09-29)

warning: missing `[lints]` to inherit `[workspace.lints]`
  --> x448/Cargo.toml
   = note: `cargo::missing_lints_inheritance` is set to `warn` by default
help: to inherit `workspace.lints, add:
   |
30 ~ all-features = true
31 + [lints]
32 + workspace = true
   |
help: to clarify your intent to not inherit, add:
   |
30 ~ all-features = true
31 + [lints]
   |