Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/2831be2: Update to 5.100.1, ghost-cli 1.26.1

library/ghost

@@ -5,12 +5,12 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Austin Burdine <[email protected]> (@acburdine)
 GitRepo: https://github.com/docker-library/ghost.git
 
-Tags: 5.100.0, 5.100, 5, latest
+Tags: 5.100.1, 5.100, 5, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: 438898494b6232a0a70f74095a78502acbc4c604
+GitCommit: 2831be2647f436ed45787e31c8942d170f37ea6e
 Directory: 5/debian
 
-Tags: 5.100.0-alpine, 5.100-alpine, 5-alpine, alpine
+Tags: 5.100.1-alpine, 5.100-alpine, 5-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 438898494b6232a0a70f74095a78502acbc4c604
+GitCommit: 2831be2647f436ed45787e31c8942d170f37ea6e
 Directory: 5/alpine