Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/1ac363f: Update to 4.10.0, ghost-cli 1.17.3

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: 4.9.4, 4.9, 4, latest
+Tags: 4.10.0, 4.10, 4, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: d7a88a952f163c1b726239ac4c8237357a3d0da7
+GitCommit: 1ac363f05b25003bdc724865128e65ca8e637865
 Directory: 4/debian
 
-Tags: 4.9.4-alpine, 4.9-alpine, 4-alpine, alpine
+Tags: 4.10.0-alpine, 4.10-alpine, 4-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: d7a88a952f163c1b726239ac4c8237357a3d0da7
+GitCommit: 1ac363f05b25003bdc724865128e65ca8e637865
 Directory: 4/alpine
 
 Tags: 3.42.5, 3.42, 3