A large customer installation has reported issues with the migrations contained in 13.0.

We can improve several things:

* [x] Inform about statement timeouts and how to increase them [https://www.openproject.org/docs/installation-and-operations/operation/upgrading/](https://www.openproject.org/docs/installation-and-operations/operation/upgrading/)
* [x] Run migrations with higher or indefinite timeout by default
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Inform in release notes and other channels about longer running migrations and how to prepare them. Begin of the insertionChecklist item https://community.openproject.org/projects/template-openproject-release/work\_packages/50227/activityEnd of the insertion