chore(deps): update container image ghcr.io/ix-ai/smtp to v0.5.2@d5a0322 by renovate (#22588)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/ix-ai/smtp | digest | `ab6ccee` -> `d5a0322` |

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This PR has been generated by [Renovate
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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zODEuNyIsInVwZGF0ZWRJblZlciI6IjM3LjM4MS43IiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInVwZGF0ZS9kb2NrZXIvZ2VuZXJhbC9ub24tbWFqb3IiXX0=-->

charts/stable/smtp-relay/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/ix-ai/smtp
   - https://github.com/truecharts/charts/tree/master/charts/stable/smtp-relay
 type: application
-version: 4.0.12
+version: 4.0.13

charts/stable/smtp-relay/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/ix-ai/smtp
   pullPolicy: IfNotPresent
-  tag: v0.5.2@sha256:ab6cceedec15c86787cc97430698d35680bb507b8a98df92bec207426309e8b2
+  tag: v0.5.2@sha256:d5a0322d770807dec978dff962a8dea63ba95d13562eac0590715a8079b5b333
 
 securityContext:
   container: