Upgrade upload-artifact action to version 4

Author: androidseb25

.github/workflows/android-release.yml

@@ -92,7 +92,7 @@ jobs:
             app/build/outputs/apk/release/app-release.apk
 
       - name: Upload Signed APK
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ipv64net-${{ steps.rename.outputs.version }}-signed
           path: app/build/outputs/apk/release/app-release.apk