v5.3.1

Patch release: point the LevelPlay mediation dependency to the renamed LevelPlay-Swift-Package repository (formerly Unity-Mediation-iAds-Swift-Package). No adapter binary or network SDK changes.

⚠️ Migration note: when adopting this version, also update your core LevelPlay package URL to LevelPlay-Swift-Package and bump all LevelPlay adapters together. Mixing old and new URLs in one app will fail to build.