Bump Spin dependency to v2.4.0 (#19)

Signed-off-by: Radu Matei <[email protected]>

Author: radu-matei

.github/workflows/build.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: 1.73
+          toolchain: 1.74
           targets: ${{ matrix.config.target }}
       - name: Install Spin
         uses: rajatjindal/setup-actions/spin@main