Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/685ac1d: Update to 5.48.0, ghost-cli 1.24.0

library/ghost

@@ -5,12 +5,12 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Austin Burdine <[email protected]> (@acburdine)
 GitRepo: https://github.com/docker-library/ghost.git
 
-Tags: 5.47.2, 5.47, 5, latest
+Tags: 5.48.0, 5.48, 5, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: 260c0c0c14a4e9b1659c3eb545ec8372de54f1f2
+GitCommit: 685ac1d60a3de99a7a67cb4ce4fc226383421147
 Directory: 5/debian
 
-Tags: 5.47.2-alpine, 5.47-alpine, 5-alpine, alpine
+Tags: 5.48.0-alpine, 5.48-alpine, 5-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 260c0c0c14a4e9b1659c3eb545ec8372de54f1f2
+GitCommit: 685ac1d60a3de99a7a67cb4ce4fc226383421147
 Directory: 5/alpine