aar publishing

.github/workflows/uniffi.yaml

@@ -539,15 +539,22 @@ jobs:
     runs-on: ubuntu-latest
     needs: [ build-android-aar ]
     if: "!contains(github.event.head_commit.message, 'skip ci')"
+    defaults:
+      run:
+        working-directory: ${{ env.UNIFFI_DIRECTORY }}
 
     steps:
       - uses: actions/checkout@v3
-
-      - name: Setup Java
-        uses: actions/setup-java@v3
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
         with:
+          java-version: '21'
           distribution: 'temurin'
-          java-version: '17'
+
+      - name: Validate Gradle wrapper jar
+        uses: gradle/actions/wrapper-validation@v3
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v3
 
       - name: Download Kotlin bindings
         uses: actions/download-artifact@v4
@@ -559,7 +566,7 @@ jobs:
         uses: actions/download-artifact@v4
         with:
           name: android-aar
-          path: build-android/aar/
+          path: ${{ env.UNIFFI_DIRECTORY }}/build-android/aar/
 
       - name: Publish Android Kotlin package to Maven Local
         run: ./gradlew publishMavenKotlinAndroidPublicationToMavenLocal