chore: add workflow to merge beta branch to tier4 main · tier4/autoware_launch@ddbf6c4

Failed to get changed files between: ceb85844eb058c2d56a621abcf69b68e73ccfa81..ec2e8254d46595e22ec22137f7c3f0afbf8171f8

Process completed with exit code 1.

No paths found using the specified patterns