build: enable R8 minify & include important JVM arguments

try to fix workflow error.

The runner has received a shutdown signal. This can happen when the runner service is stopped, or a manually started runner is canceled.

app/build.gradle

@@ -71,8 +71,8 @@ android {
             }
             applicationIdSuffix '.release'
 
-            minifyEnabled false
-            //shrinkResources true
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
         debug {

gradle.properties

@@ -6,7 +6,9 @@
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx6000m
+# Default value: -Xmx512m -XX:MaxMetaspaceSize=384m
+# Bugs: This will override important JVM argument defaults. Include all important JVM arguments if you wan to change arguments. See https://github.com/gradle/gradle/issues/19750
+org.gradle.jvmargs=-Xmx6000m -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects