Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/a710352: Update to 4.32.1, ghost-cli 1.18.1

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: 4.32.0, 4.32, 4, latest
+Tags: 4.32.1, 4.32, 4, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: f9e21738c57f92c845497d9ea27f6f7c10b1cf9c
+GitCommit: a710352ab58e65982bc7e1abaa2ae06d5eb068bb
 Directory: 4/debian
 
-Tags: 4.32.0-alpine, 4.32-alpine, 4-alpine, alpine
+Tags: 4.32.1-alpine, 4.32-alpine, 4-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: c250070ee52273724da6893574cb3b19c1e1b147
+GitCommit: a710352ab58e65982bc7e1abaa2ae06d5eb068bb
 Directory: 4/alpine
 
 Tags: 3.42.8, 3.42, 3