Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/0020d70: Update to 5.22.1, ghost-cli 1.23.1
- https://github.com/docker-library/ghost/commit/e80d4bc: Update to 5.22.0, ghost-cli 1.23.1
- https://github.com/docker-library/ghost/commit/65f3fcd: Update to 5.21.0, ghost-cli 1.23.1

library/ghost

@@ -4,14 +4,14 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/ghost.git
 
-Tags: 5.20.0, 5.20, 5, latest
+Tags: 5.22.1, 5.22, 5, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: 892422ace549f8befaf51c8cf8d8f53c6a7a3c4e
+GitCommit: 0020d7037237ef58c08978fe2dfb68f1560a544d
 Directory: 5/debian
 
-Tags: 5.20.0-alpine, 5.20-alpine, 5-alpine, alpine
+Tags: 5.22.1-alpine, 5.22-alpine, 5-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 892422ace549f8befaf51c8cf8d8f53c6a7a3c4e
+GitCommit: 0020d7037237ef58c08978fe2dfb68f1560a544d
 Directory: 5/alpine
 
 Tags: 4.48.6, 4.48, 4