update build tooling

Author: serggl

build.gradle

@@ -13,7 +13,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.3'
+        classpath 'com.android.tools.build:gradle:7.4.2'
         classpath "gradle.plugin.com.hierynomus.gradle.plugins:license-gradle-plugin:0.16.1"
         classpath "com.google.android.libraries.mapsplatform.secrets-gradle-plugin:secrets-gradle-plugin:1.2.0"
     }

gradle/wrapper/gradle-wrapper.properties

@@ -3,6 +3,6 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 android.enableJetifier=true
 android.useAndroidX=true

library/build.gradle

@@ -4,12 +4,13 @@ apply plugin: 'signing'
 apply plugin: 'checkstyle'
 
 android {
-    compileSdkVersion 31
-    buildToolsVersion '30.0.3'
 
     defaultConfig {
-        minSdkVersion 14
-        targetSdkVersion 31
+        compileSdk = 33
+        buildToolsVersion = '30.0.3'
+
+        minSdkVersion 19
+        targetSdkVersion 33
         consumerProguardFiles 'progress-proguard.txt'
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

library/src/main/java/com/anjlab/android/iab/v3/PurchaseInfo.java

@@ -30,8 +30,7 @@
  * server. An example implementation of how to verify
  * a purchase you can find here:
  * <pre>
- * See <a href="https://github.com/mgoldsborough/google-play-in-app-billing-verification/blob/
- * master/library/GooglePlay/InAppBilling/GooglePlayResponseValidator.php#L64"> here </a>
+ * See <a href="https://t.ly/Hd76A"> here </a>
  * </pre>
  */
 public class PurchaseInfo implements Parcelable

sample/build.gradle

@@ -11,14 +11,13 @@ dependencies {
 }
 
 android {
-    compileSdkVersion 31
-    buildToolsVersion '30.0.3'
-
     defaultConfig {
-        versionCode 4
-        versionName '4.0'
-        minSdkVersion 14
-        targetSdkVersion 31
+        versionCode 5
+        versionName '5.0'
+        minSdkVersion 19
+        targetSdkVersion 33
+        compileSdk = 33
+        buildToolsVersion = '30.0.3'
     }
 
     sourceSets.main {