chore(helm): update image ghcr.io/cloudnative-pg/postgresql 15.13 → 15.14 (#39843)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/cloudnative-pg/postgresql | minor |  ->  |

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charts/library/common/Chart.yaml

@@ -35,5 +35,5 @@ sources:
   - https://hub.docker.com/_/
   - https://hub.docker.com/r/mikefarah/yq
 type: library
-version: 28.18.2
+version: 28.19.0
 

charts/library/common/values.yaml

@@ -611,7 +611,7 @@ mongodbClientImage:
 
 postgres15Image:
   repository: ghcr.io/cloudnative-pg/postgresql
-  tag: "15.13"
+  tag: "15.14"
   pullPolicy: IfNotPresent
 
 postgres16Image: