Upgraded billing lib to v7.1.1

[cb-rohitsharma]

Upgraded Billing Client from v6.2.1 to v7.1.1, and made necessary code changes to support the updated version.

Changes

• Upgraded Billing Client dependency to v7.1.1 (from v6.2.1).
• Refactored buildBillingClient method in BillingClientManager.kt to handle breaking changes:
  • Updated usage of enablePendingPurchases() as per the new API requirements.

Impact

• Purchase Flow

Testing

• Verified successful initialization of the Billing Client.
• Tested purchase flow scenario.

[Copilot]

Pull Request Overview

Upgrades the Google Billing Client to v7.1.1 and updates SDK version and docs accordingly

• Refactored buildBillingClient to use the new enablePendingPurchases(PendingPurchasesParams) API
• Bumped sdkVersion constant from 2.0.0-beta-4 to 2.0.0-beta-5
• Updated README to reflect Billing Library 7.1.1

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
chargebee/src/main/java/com/chargebee/android/billingservice/BillingClientManager.kt	Added PendingPurchasesParams import and updated enablePendingPurchases call
chargebee/src/main/java/com/chargebee/android/Chargebee.kt	Updated sdkVersion constant to 2.0.0-beta-5
README.md	Adjusted documentation bullets to reference Google Billing Library 7.1.1

Comments suppressed due to low confidence (2)

README.md:9

• The heading still references Billing Library 5 even though the README has been updated for v7.1.1. Please update the header to reflect the correct Billing Library version (e.g., "Updates for Billing Library 7").

> #### Updates for Billing Library 5

chargebee/src/main/java/com/chargebee/android/billingservice/BillingClientManager.kt:20

• The import for PendingPurchasesParams appears to be from the wrong package. It should be imported from com.android.billingclient.api.PendingPurchasesParams instead of com.chargebee.android.models.

import com.chargebee.android.models.PendingPurchasesParams