PACs need to be regenerated to remove lint diagnostic

[pabigot]

With Rust 1.66 all pacs produce:

    warning: lint `const_err` has been removed: converted into hard error, see issue #71800 <https://github.com/rust-lang/rust/issues/71800> for more information
     --> /mnt/devel/external/Rust/github.com/atsamd-rs/atsamd/pac/atsamd51p/src/lib.rs:3:9
      |
    3 | #![deny(const_err)]
      |         ^^^^^^^^^
      |
      = note: `#[warn(renamed_and_removed_lints)]` on by default

svdrust v0.27.0 or later is needed to remove this lint from the generated code.