Add merge migration
The goal is to fix the CircleCI build:
https://github.com/codalab/codabench/pull/1228/commits/5985291305017c0ecf5706adbf94b2f76f8f5d67
After this PR:
- #1223
The goal is to fix the CircleCI build:
https://github.com/codalab/codabench/pull/1228/commits/5985291305017c0ecf5706adbf94b2f76f8f5d67
After this PR: