upgrade android targetSdkVersion to 30

Author: zihejia

.gitignore

@@ -4,6 +4,7 @@
 # node.js
 node_modules/
 npm-debug.log
+yarn.lock
 yarn-error.log
 package-lock.json
 *.tgz

Samples/ContextAPIMixpanel/package.json

@@ -10,7 +10,7 @@
     "lint": "eslint ."
   },
   "dependencies": {
-    "mixpanel-react-native": "file:../../",
+    "mixpanel-react-native": "file:../..",
     "react": "17.0.1",
     "react-native": "0.64.2"
   },

android/build.gradle

@@ -11,11 +11,11 @@ buildscript {
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 28
-    buildToolsVersion "28.0.3"
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
     defaultConfig {
         minSdkVersion 21
-        targetSdkVersion 26
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
     }