Update ghost
Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/140b7ff: Update to 5.19.3, ghost-cli 1.23.1
- https://github.com/docker-library/ghost/commit/ecfd518: Update to 5.19.2, ghost-cli 1.23.1
- https://github.com/docker-library/ghost/commit/0d3aace: Update to 5.19.1, ghost-cli 1.23.1

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