Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/463b593: Update to 5.16.2, ghost-cli 1.23.0

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: 5.14.2, 5.14, 5, latest
+Tags: 5.16.2, 5.16, 5, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: c13e701715cfa0feea436163eb3b531fc1149896
+GitCommit: 463b5935180624197ce2a527775af79501a10051
 Directory: 5/debian
 
-Tags: 5.14.2-alpine, 5.14-alpine, 5-alpine, alpine
+Tags: 5.16.2-alpine, 5.16-alpine, 5-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: c13e701715cfa0feea436163eb3b531fc1149896
+GitCommit: 463b5935180624197ce2a527775af79501a10051
 Directory: 5/alpine
 
 Tags: 4.48.4, 4.48, 4