bumped to billing library v7 because of deadline (#549)

* bumped to billing library v7 because of deadlines and min api lvl 21 to comply with v7 prequisites

* replaced setOldSkuPurchaseToken with setOldPurchaseToken

---------

Co-authored-by: Cherd <[email protected]>
Co-authored-by: Julian Müller <[email protected]>

Author: 3 people

library/build.gradle

@@ -9,7 +9,7 @@ android {
         compileSdk = 33
         buildToolsVersion = '30.0.3'
 
-        minSdkVersion 19
+        minSdkVersion 21
         targetSdkVersion 33
         consumerProguardFiles 'progress-proguard.txt'
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -33,7 +33,7 @@ dependencies {
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     implementation 'androidx.annotation:annotation:1.3.0'
-    implementation 'com.android.billingclient:billing:6.1.0'
+    implementation 'com.android.billingclient:billing:7.0.0'
 }
 
 task androidJavadocs(type: Javadoc) {

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

@@ -694,7 +694,8 @@ public void run()
 						billingFlowParamsBuilder.setSubscriptionUpdateParams(
 								BillingFlowParams.SubscriptionUpdateParams
 										.newBuilder()
-										.setOldSkuPurchaseToken(oldToken)
+
+										.setOldPurchaseToken(oldToken)
 										.build());
 					}
 				}

sample/build.gradle

@@ -14,7 +14,7 @@ android {
     defaultConfig {
         versionCode 5
         versionName '5.0'
-        minSdkVersion 19
+        minSdkVersion 21
         targetSdkVersion 33
         compileSdk = 33
         buildToolsVersion = '30.0.3'