Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/434140b: Merge pull request https://github.com/docker-library/ghost/pull/320 from jmaitrehenry/master
- https://github.com/docker-library/ghost/commit/3c0190d: Update to Alpine 3.16
- https://github.com/docker-library/ghost/commit/f5591a1: Update to 5.4.1, ghost-cli 1.21.0

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: 5.3.1, 5.3, 5, latest
+Tags: 5.4.1, 5.4, 5, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: c4cd83a5e49dd54cd6e7df1d7858550c558efdf2
+GitCommit: f5591a1a9de32a0590c229531cc7d48f2ee294e6
 Directory: 5/debian
 
-Tags: 5.3.1-alpine, 5.3-alpine, 5-alpine, alpine
+Tags: 5.4.1-alpine, 5.4-alpine, 5-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: c4cd83a5e49dd54cd6e7df1d7858550c558efdf2
+GitCommit: 3c0190da0bc240150dd335c084dcb4c995cec7b7
 Directory: 5/alpine
 
 Tags: 4.48.2, 4.48, 4
@@ -21,5 +21,5 @@ Directory: 4/debian
 
 Tags: 4.48.2-alpine, 4.48-alpine, 4-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 792a7dede4645f80fa0f3022303d12d156b5db80
+GitCommit: 3c0190da0bc240150dd335c084dcb4c995cec7b7
 Directory: 4/alpine