[SDK] [Android] Release v1.2.7.0

GitHub release
Integration guide

Changelog:

• Fix SDK initialization on some Honor and Huawei devices that block external Service call used by OpenUDID.
  We got rid of OpenUDID, using an app-local UUIDv4 instead to be totally user privacy-friendly, including starting from a fresh state on application reinstallation.
• Read AdvertisingId, unless ad tracking is limited, to help multi-project owners perform cross-project analysis and segmentation.