install wasm32-unknown-unknown on CI

Author: orsinium

.github/workflows/main.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
       - uses: arduino/setup-task@v1
         with:
           repo-token: ${{ github.token }}