upgrade flutter

apps/weblibre/android/app/src/main/AndroidManifest.xml

@@ -271,6 +271,10 @@
             android:name="io.flutter.embedding.android.EnableImpeller"
             android:value="false" />
 
+        <meta-data
+            android:name="io.flutter.embedding.android.EnableHcpp"
+            android:value="true" />
+
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data

apps/weblibre/android/gradle.properties

@@ -1,3 +1,7 @@
 org.gradle.jvmargs=-Xmx4G -XX:+HeapDumpOnOutOfMemoryError
 android.useAndroidX=true
 android.enableJetifier=true
+# This builtInKotlin flag was added automatically by Flutter migrator
+android.builtInKotlin=false
+# This newDsl flag was added automatically by Flutter migrator
+android.newDsl=false