fix: update NDK version and refine packaging options in build configuration

Author: gopi2401

android/app/build.gradle

@@ -25,7 +25,7 @@ if (flutterVersionName == null) {
 android {
     namespace "com.example.insta"
     compileSdkVersion flutter.compileSdkVersion
-    ndkVersion flutter.ndkVersion
+    ndkVersion = "27.0.12077973"
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
@@ -53,6 +53,13 @@ android {
         setProperty("archivesBaseName","insta-v" + versionName)
     }
 
+    packagingOptions {
+        pickFirst 'lib/x86/libc++_shared.so'
+        pickFirst 'lib/x86_64/libc++_shared.so'
+        pickFirst 'lib/armeabi-v7a/libc++_shared.so'
+        pickFirst 'lib/arm64-v8a/libc++_shared.so'
+    }
+
     buildTypes {
         release {
             // TODO: Add your own signing config for the release build.
@@ -68,6 +75,4 @@ flutter {
 
 dependencies {
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.4'
-    implementation 'com.example.library:library:1.0.0'
-    implementation 'com.android.support:appcompat-v7:28.0.0'
 }