billing module still targets Play Billing Library 7.1.1 - timeline for Billing Library 8 (required by Play by Aug 31, 2026)?

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Start by locating the billing module and its Play Billing Library 7.1.1 dependency, then review the current integration against the requirements for Billing Library 8. The issue is complete when the upgrade timeline and any compatibility work are clearly established; the payload names no files or tests.

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