chore: update to release bevy 0.18.0

[jiangheng90]

No description provided.

[jiangheng90]

update to bevy 0.18.0

[Lethja]

Copying error before CI output expires

error: unsafe block missing a safety comment
   --> src/grid/propagation.rs:196:13
    |
196 |             unsafe {
    |             ^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
    = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.93.0/index.html#undocumented_unsafe_blocks
    = note: `-D clippy::undocumented-unsafe-blocks` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::undocumented_unsafe_blocks)]`

error: could not compile `big_space` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
Error: Process completed with exit code 101.

[aevyrie]

superseded by #64