Use cargo install for aarch64-apple-darwin cargo-dinghy

.github/workflows/tests.yml

@@ -105,12 +105,20 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: ${{ matrix.target }}
+      # There is no precompiled cargo-dinghy for Aarch64
       - name: Install precompiled cargo-dinghy
+        if: ${{ matrix.target == 'x86_64-apple-ios' }}
         run: |
           VERSION=0.6.2
           URL="https://github.com/sonos/dinghy/releases/download/${VERSION}/cargo-dinghy-macos-${VERSION}.tgz"
           wget -O - $URL | tar -xz --strip-components=1 -C ~/.cargo/bin
-          cargo dinghy --version
+      - name: cargo install cargo-dinghy
+        if: ${{ matrix.target == 'aarch64-apple-ios-sim' }}
+        run: |
+          VERSION=0.6.2
+          cargo install cargo-dinghy --version ${VERSION}
+      - name: Check cargo-dinghy version.
+        run: cargo dinghy --version
       - name: Setup Simulator
         # Use the first installed iOS runtime and the first (i.e. oldest) supported iPhone device.
         run: |