fix: 修改release配置，增加签名

android/app/build.gradle

@@ -128,6 +128,7 @@ android {
         release {
             minifyEnabled enableProguardInReleaseBuilds
             proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
+            signingConfig signingConfigs.release
         }
     }
     // applicationVariants are e.g. debug, release