Revert "[android_alarm_manager] Update minimum Flutter version to 1.12.0 (#2327)" (#2345)
Revert "[android_alarm_manager] Update minimum Flutter version to 1.12.0 (#2327)" (#2345)

This reverts commit 9d367d66a6346ecebf3becf3adc1bbe4527ecbf7.
mehmetf/plugins,mehmetf/plugins,flutter/plugins,tvolkert/plugins,flutter/plugins,mehmetf/plugins,mehmetf/plugins,flutter/plugins,flutter/plugins,flutter/plugins,flutter/plugins,tvolkert/plugins,flutter/plugins,tvolkert/plugins,tvolkert/plugins,flutter/plugins,mehmetf/plugins