Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/8e7be5c: Merge pull request https://github.com/docker-library/ghost/pull/186 from Robo210/master
- https://github.com/docker-library/ghost/commit/6580a99: Use more specific path in "/tmp" cleaning
- https://github.com/docker-library/ghost/commit/c3bac50: Also remove cache when installing ghost-cli; apply changes to all versions and variants
- https://github.com/docker-library/ghost/commit/ffe4bc0: Update to 2.23.4, ghost-cli 1.11.0
- https://github.com/docker-library/ghost/commit/6e8d56d: Fix spaces/tabs
- https://github.com/docker-library/ghost/commit/edacddb: Reduce image size

library/ghost

@@ -4,22 +4,22 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/ghost.git
 
-Tags: 2.23.3, 2.23, 2, latest
+Tags: 2.23.4, 2.23, 2, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: a1d9b26341daacea67b2fa0c69aea6609dc26265
+GitCommit: 8e7be5c619623273b3f2b9528ebef9273b481085
 Directory: 2/debian
 
-Tags: 2.23.3-alpine, 2.23-alpine, 2-alpine, alpine
+Tags: 2.23.4-alpine, 2.23-alpine, 2-alpine, alpine
 Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
-GitCommit: a1d9b26341daacea67b2fa0c69aea6609dc26265
+GitCommit: 8e7be5c619623273b3f2b9528ebef9273b481085
 Directory: 2/alpine
 
 Tags: 1.25.8, 1.25, 1
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 9e5102f97656cc31554c1c204a34f87b8289b20b
+GitCommit: 6580a99957b8c39cad68b4e497c626c470e9f7f1
 Directory: 1/debian
 
 Tags: 1.25.8-alpine, 1.25-alpine, 1-alpine
 Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
-GitCommit: 9e5102f97656cc31554c1c204a34f87b8289b20b
+GitCommit: 6580a99957b8c39cad68b4e497c626c470e9f7f1
 Directory: 1/alpine