What’s Changed
mapping_file input is no longer set by default. This resolves an issue where the default mapping file could override the one included in the bundle (*.aab).
Breaking changes
For bundles: no breaking change in practice.
For apks: set mapping_file input to $BITRISE_MAPPING_PATH (the previous default) to restore previous behaviour.
Full Changelog: Comparing 3.9.0...4.0.0 · bitrise-steplib/steps-google-play-deploy · GitHub