Add changelog for 283
This MR was automatically created from CI, https://gitlab.com/gitlab-org/gitter/gitter-android-app/-/jobs/141678998
We copied CURRENT_VERSION.txt
-> 283.txt
This MR was automatically created from CI, https://gitlab.com/gitlab-org/gitter/gitter-android-app/-/jobs/141678998
We copied CURRENT_VERSION.txt
-> 283.txt