Fix error[E0635]: unknown feature stdsimd

[glenfletcher]

I received the following error when trying to build on Linux 6.6.10-1-MANJARO #1 SMP PREEMPT_DYNAMIC Fri Jan 5 17:38:36 UTC 2024 x86_64 GNU/Linux:

error[E0635]: unknown feature `stdsimd`
  --> /home/glen/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ahash-0.8.3/src/lib.rs:99:42
   |
99 | #![cfg_attr(feature = "stdsimd", feature(stdsimd))]
   |                                          ^^^^^^^

For more information about this error, try `rustc --explain E0635`.
error: could not compile `ahash` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
error: Recipe `build` failed on line 4 with exit code 101

After searching for this error, I found the following:
aHash issues: tkaitchuck/aHash#195 and tkaitchuck/aHash#200
rust-lang issues: https://users.rust-lang.org/t/error-e0635-unknown-feature-stdsimd/106445

Based on these, I used cargo tree -i ahash@0.7.6 to get the following:

ahash v0.7.6
├── hashbrown v0.11.2
│   └── lasso v0.5.1
│       └── grass v0.11.2
│           [build-dependencies]
│           └── celeste v0.8.1 (/home/glen/code/celeste)
├── sqlx-core v0.6.3
│   └── sqlx-macros v0.6.3 (proc-macro)
│       └── sqlx v0.6.3
│           ├── sea-orm v0.10.7
│           │   ├── celeste v0.8.1 (/home/glen/code/celeste)
│           │   └── sea-orm-migration v0.10.7
│           │       └── celeste v0.8.1 (/home/glen/code/celeste)
│           └── sea-query-binder v0.2.2
│               └── sea-orm v0.10.7 (*)
└── sqlx-core v0.6.3
    └── sqlx v0.6.3 (*)

Based on this, I updated the version of the grass and sea-orm dependencies and deleted Cargo.lock so it could be regenerated; this fixed the build error on my system.