Update ghost

Changes:

- docker-library/ghost@49a4e91: Update to 5.101.4, ghost-cli 1.26.1
- docker-library/ghost@c1a313f: Update README

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: 5.101.3, 5.101, 5, latest
+Tags: 5.101.4, 5.101, 5, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, s390x
-GitCommit: c0390b479deba850f0b57708aadc3772ed5b3d81
+GitCommit: 49a4e9114a9c0afd8246ce1764729ea0586f4eeb
 Directory: 5/debian
 
-Tags: 5.101.3-alpine, 5.101-alpine, 5-alpine, alpine
+Tags: 5.101.4-alpine, 5.101-alpine, 5-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: c0390b479deba850f0b57708aadc3772ed5b3d81
+GitCommit: 49a4e9114a9c0afd8246ce1764729ea0586f4eeb
 Directory: 5/alpine