Use install-action to install cross

Author: taiki-e

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
     - name: Install Rust
       run: rustup update stable
     - name: Install cross
-      run: cargo install cross
+      uses: taiki-e/install-action@cross
     - name: Android
       if: startsWith(matrix.os, 'ubuntu')
       run: cross test --target arm-linux-androideabi