Fix build-android-jni CI workflow failure

Use the workaround mentioned in
https://github.com/android-actions/setup-android/issues/537.

Fixes https://github.com/AOMediaCodec/libavif/issues/3365.

.github/workflows/ci-android-jni.yml

diff --git a/.github/workflows/ci-android-jni.yml b/.github/workflows/ci-android-jni.yml
index e52d42a..e93c42e 100644
--- a/.github/workflows/ci-android-jni.yml
+++ b/.github/workflows/ci-android-jni.yml
@@ -38,6 +38,9 @@
           java-version: 17
       - name: Download and Setup the Android SDK
         uses: android-actions/setup-android@40fd30fb8d7440372e1316f5d1809ec01dcd3699 # v4.0.1
+        # Work around https://github.com/android-actions/setup-android/issues/537.
+        with:
+          packages: 'platform-tools'
       - name: Install CMake in the Android SDK
         # This is the same version of cmake that is found in build.gradle. This
         # will be used to build libavif and the JNI bindings.