maybe fix no-op ci

Author: dsherret

.github/workflows/build.yml

@@ -280,6 +280,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
       - uses: Swatinem/rust-cache@v2
       - env:
           RUSTFLAGS: -Dwarnings --cfg getrandom_backend="no_op"