Update actions/download-artifact action to v4 (#127)

Author: renovate[bot]

.github/workflows/android.yml

@@ -143,7 +143,7 @@ jobs:
           java-version: '21'
 
       - name: Download build artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: build-outputs
           path: android/app/build/outputs
@@ -188,7 +188,7 @@ jobs:
           java-version: '21'
 
       - name: Download build artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: build-outputs
           path: android/app/build/outputs