Fix WASM tests

.github/workflows/ci.yml

@@ -70,6 +70,8 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - uses: dtolnay/rust-toolchain@stable
+      with:
+        toolchain: "1.76.0"
     - uses: actions/checkout@v3
     - name: Install wasm-pack
       run: |