Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/9107db8: Merge pull request https://github.com/docker-library/ghost/pull/279 from infosiftr/alpine3.14
- https://github.com/docker-library/ghost/commit/c250070: Update to Alpine 3.14

library/ghost

@@ -11,7 +11,7 @@ Directory: 4/debian
 
 Tags: 4.32.0-alpine, 4.32-alpine, 4-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: f9e21738c57f92c845497d9ea27f6f7c10b1cf9c
+GitCommit: c250070ee52273724da6893574cb3b19c1e1b147
 Directory: 4/alpine
 
 Tags: 3.42.8, 3.42, 3
@@ -21,5 +21,5 @@ Directory: 3/debian
 
 Tags: 3.42.8-alpine, 3.42-alpine, 3-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 14c6c9dc1673c75472eabd7b545fdf4b8dfcf4df
+GitCommit: c250070ee52273724da6893574cb3b19c1e1b147
 Directory: 3/alpine