Update android/build.gradle

Co-authored-by: Maurits van Beusekom <[email protected]>

Author: JDDV

android/build.gradle

@@ -22,7 +22,7 @@ rootProject.allprojects {
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 31
+    compileSdkVersion flutter.compileSdkVersion
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8