Add changelog for 333
This MR was automatically created from CI, https://gitlab.com/gitlab-org/gitter/gitter-android-app/-/jobs/222114691
We copied CURRENT_VERSION.txt
-> 333.txt
This MR was automatically created from CI, https://gitlab.com/gitlab-org/gitter/gitter-android-app/-/jobs/222114691
We copied CURRENT_VERSION.txt
-> 333.txt