[ghost] Update charts/ghost/values.yaml ghost to v6.7.0

Author: renovate[bot]

charts/ghost/values.yaml

@@ -22,7 +22,7 @@ image:
   ## @param image.repository Nginx image repository
   repository: ghost
   ## @param image.tag Nginx image tag
-  tag: "6.6.0@sha256:d49be5129610c38e9c785478344943d910c141866bb91cbe17b6d451370f03e1"
+  tag: "6.7.0@sha256:287c765e594fd1197a9acde9328e02dfa6c54b3d8dd2f282e8d063850af6bd3f"
   ## @param image.pullPolicy Nginx image pull policy
   pullPolicy: Always