build fails on nightly (or wasm target only?)

[yutannihilation]

Just for sharing. https://github.com/tkaitchuck/aHash/issues/200 is the issue and this is probably just a temporary one.

error[E0635]: unknown feature `stdsimd`
  --> /tmp/RtmpAfozKq/file16ea87038/prqlr/src/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ahash-0.8.6/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...
make: *** [Makevars:19: /tmp/RtmpAfozKq/file16ea87038/prqlr/src/rust/target/wasm32-unknown-emscripten/release/libprqlr.a] Error 101
ERROR: compilation failed for package 'prqlr'

https://github.com/yutannihilation/savvy-webr-test/actions/runs/7860163904/job/21447049235#step:4:613