chore(helm): update image docker.io/phpmyadmin digest to 6cb0a71 (#33442)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/phpmyadmin | digest | `97fa7d2` -> `6cb0a71` |

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS4yMDcuMiIsInVwZGF0ZWRJblZlciI6IjM5LjIwNy4yIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInJlbm92YXRlL2NvbnRhaW5lciIsInR5cGUvZGlnZXN0Il19-->

charts/stable/phpmyadmin/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/phpmyadmin
   - https://hub.docker.com/_/phpmyadmin
 type: application
-version: 7.5.5
+version: 7.5.6

charts/stable/phpmyadmin/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: docker.io/phpmyadmin
-  tag: 5.2.2@sha256:97fa7d2bb353179c6c8484c09a59fd24ea3402cb16df63ab68c5e3b160c4becb
+  tag: 5.2.2@sha256:6cb0a7146734b59c8ca4f450ce7bde9f518e36b10558af75fc36591cbea1d5cc
 portal:
   open:
     enabled: true