need cargo attribute for experimental feature

[requaos]

the inline-const feature is still gated with an attribute flag on stable rustc:

error[E0658]: inline-const is experimental
  --> /nix/store/qmfd7rc3ydzwiijcg7vzfsja7ykjcy60-vendor-cargo-deps/c19b7c6f923b580ac259164a89f2577984ad5ab09ee9d583b888f934adbbe8d0/revision-0.9.0/src/implementations/string.rs:55:33
   |
55 | static CHAR_LENGTH: [u8; 256] = const {
   |                                 ^^^^^
   |
   = note: see issue #76001 <https://github.com/rust-lang/rust/issues/76001> for more information
   = help: add `#![feature(inline_const)]` to the crate attributes to enable

[requaos]

ran into this building surrealdb from tip of main

[requaos]

Just needed to use rust version >= v1.79 for rust-lang/rust#104087