v6.3.1

Full Changelog

Closed issues:

• Check for batched background migrations to be finished #247 [gitlab]

Merged pull requests:

• Prepare release version 6.3.1 #534 (Normo)
• gitlab: fix check for batched background migrations #533 [gitlab] (Normo)
• gitlab-runner: Bump fleeting-plugin-openstack to v0.33.0 #532 [gitlab_runner] (Normo)
• gitlab-runner: Fix empty gitlab_runner_version evaluation in version test #531 [gitlab_runner] (Normo)