Add targets for WASI, Android, and iOS

Author: emmatyping

.github/workflows/build.yml

@@ -383,6 +383,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          targets: ${{ matrix.arch }}-linux-android
       - name: Build and test
         run: ./Android/android.py ci --fast-ci ${{ matrix.arch }}-linux-android
 
@@ -396,7 +399,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
-
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          targets: aarch64-apple-ios-sim
       # GitHub recommends explicitly selecting the desired Xcode version:
       # https://github.com/actions/runner-images/issues/12541#issuecomment-3083850140
       # This became a necessity as a result of

.github/workflows/reusable-wasi.yml

@@ -48,6 +48,9 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: '3.x'
+    - uses: dtolnay/rust-toolchain@master
+      with:
+        targets: wasm32-wasip1
     - name: "Runner image version"
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: "Configure build Python"