Update deployer/deployer in / from v6.3.0 to v6.4.0

[dependencies]

Dependencies.io has updated deployer/deployer (a packagist dependency in /) from "v6.3.0" to "v6.4.0".

v6.4.0

Added

• Support to define remote shell path via host-config [#1708] [#1709] [#1709]
• Added horizon:terminate to the Laravel recipe
• Added migrations_config option to the Symfony recipes to specify Doctrine migration configuration to use
• Added recipe for sulu 2.0 [#1758]
• Added recipe for sulu 1.x and improve sulu 2.0 recipe [#1764]
• Added become option for rsync upload

Changed

• Laravel recipe should not run artisan:cache:clear in deploy task
• Pass-through the quiet mode into the git commands for updating code
• deploy:writable will no longer be able to automatically detect http_user if there are multiple candidates for the role [#1778]

Fixed

• Fixed Range expansion when hosts.yml is loaded. [#1671]
• Fixed usage (only if present) of deploy_path config setting. [#1677]
• Fixed adding custom headers causes Httpie default header override.
• Fixed Laravel laravel_version failure
• Fixed parser errors by adding the trim function to the changelog parser tokens
• Fixed arguments for rsync to be properly escaped
• Prevent multiple execution of task()->once() with --parallel and --limit option [#1419]