build: add workaround for bintray upload signing issue
build: add workaround for bintray upload signing issue

bugsnag/bugsnag-android-gradle-plugin,bugsnag/bugsnag-android-gradle-plugin,bugsnag/bugsnag-android-gradle-plugin,bugsnag/bugsnag-android-gradle-plugin,bugsnag/bugsnag-android-gradle-plugin,bugsnag/bugsnag-android-gradle-plugin