Recreated composer autoload after deploy:rollback

Most commonly the vendor directory is shared, which makes the class loader file shared as well.
This causes an issue with the class loader referencing files from the latest (now deleted) version.

See https://github.com/everzet/capifony/issues/422 for more details.
Merge pull request #460 from ubick/fix-rollback

Recreated composer autoload after deploy:rollback