Tweak wasip2 CI job

Author: newpavlov

.github/workflows/tests.yml

@@ -306,7 +306,7 @@ jobs:
           wget -O - $URL | tar -xJ --strip-components=1 -C ~/.cargo/bin
           wasmtime --version
       - uses: Swatinem/rust-cache@v2
-      - run: cargo test --no-default-features --target wasm32-wasip2 -Z build-std=core,alloc
+      - run: cargo test --no-default-features --target wasm32-wasip2 -Zbuild-std=std,panic_abort
 
   build-tier2:
     name: Tier 2 Build