chore: added Install rust toolchain step

Author: limcheekin

.github/workflows/build-wasm-js.yaml

@@ -20,6 +20,11 @@ jobs:
         uses: pnpm/[email protected]
         with:
           version: 8
+
+      - name: Install rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: 1.79.0     
 
       - name: Install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh