Update VERSIONS.md

Author: RevenueCat CI

VERSIONS.md

@@ -1,5 +1,6 @@
 | Version       | iOS version | Android version | Common files version  | Play Billing Library version |
 |---------------|-------------|-----------------|-----------------------|------------------------------|
+| 9.15.1 | [5.67.0](https://github.com/RevenueCat/purchases-ios/releases/tag/5.67.0) | [9.28.1](https://github.com/RevenueCat/purchases-android/releases/tag/9.28.1) | [17.54.0](https://github.com/RevenueCat/purchases-hybrid-common/releases/tag/17.54.0) | [8.0.0](https://developer.android.com/google/play/billing/release-notes) |
 | 9.15.0 | [5.66.0](https://github.com/RevenueCat/purchases-ios/releases/tag/5.66.0) | [9.27.0](https://github.com/RevenueCat/purchases-android/releases/tag/9.27.0) | [17.53.0](https://github.com/RevenueCat/purchases-hybrid-common/releases/tag/17.53.0) | [8.0.0](https://developer.android.com/google/play/billing/release-notes) |
 | 9.14.0 | [5.65.0](https://github.com/RevenueCat/purchases-ios/releases/tag/5.65.0) | [9.26.1](https://github.com/RevenueCat/purchases-android/releases/tag/9.26.1) | [17.52.0](https://github.com/RevenueCat/purchases-hybrid-common/releases/tag/17.52.0) | [8.0.0](https://developer.android.com/google/play/billing/release-notes) |
 | 9.13.0 | [5.65.0](https://github.com/RevenueCat/purchases-ios/releases/tag/5.65.0) | [9.26.1](https://github.com/RevenueCat/purchases-android/releases/tag/9.26.1) | [17.51.1](https://github.com/RevenueCat/purchases-hybrid-common/releases/tag/17.51.1) | [8.0.0](https://developer.android.com/google/play/billing/release-notes) |