chore(deps): update container image ghcr.io/ix-ai/smtp to v0.5.2@2191565 by renovate (#23818)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/ix-ai/smtp | digest | `4d03169` -> `2191565` |

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This PR has been generated by [Renovate
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charts/stable/smtp-relay/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/ix-ai/smtp
   - https://github.com/truecharts/charts/tree/master/charts/stable/smtp-relay
 type: application
-version: 5.1.3
+version: 5.1.4

charts/stable/smtp-relay/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/ix-ai/smtp
   pullPolicy: IfNotPresent
-  tag: v0.5.2@sha256:4d03169e660cfe733ea6a7314665145d8b6bb8a1c033c0232a9e0f88952e7b92
+  tag: v0.5.2@sha256:2191565f03f43fa0cb6acedc5b93e1ffe77787f98b934c98cbcee602920a4e7b
 
 securityContext:
   container: