chore(helm): update image docker.io/cthulhoo/ttrss-fpm-pgsql-static digest to 47241c9 (#28099)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/cthulhoo/ttrss-fpm-pgsql-static | digest | `3fa0750` ->
`47241c9` |

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:eyJjcmVhdGVkSW5WZXIiOiIzOC4xMjguNiIsInVwZGF0ZWRJblZlciI6IjM4LjEyOC42IiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInJlbm92YXRlL2NvbnRhaW5lciIsInR5cGUvZGlnZXN0Il19-->

charts/stable/tt-rss/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://hub.docker.com/r/cthulhoo/ttrss-fpm-pgsql-static
   - https://hub.docker.com/r/cthulhoo/ttrss-web-nginx
 type: application
-version: 18.2.2
+version: 18.2.4

charts/stable/tt-rss/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/cthulhoo/ttrss-fpm-pgsql-static
   pullPolicy: IfNotPresent
-  tag: latest@sha256:3fa075033cc1ec72cbf3eeba06bd382b7dd2338090914c703c3ad497eeb80011
+  tag: latest@sha256:47241c99a07e109ff645bfb40ec695a408e67c3c27e2ab14ea2a7a8643646fde
 nginxImage:
   repository: docker.io/cthulhoo/ttrss-web-nginx
   pullPolicy: IfNotPresent
@@ -9,7 +9,7 @@ nginxImage:
 updaterImage:
   repository: docker.io/cthulhoo/ttrss-fpm-pgsql-static
   pullPolicy: IfNotPresent
-  tag: latest@sha256:3fa075033cc1ec72cbf3eeba06bd382b7dd2338090914c703c3ad497eeb80011
+  tag: latest@sha256:47241c99a07e109ff645bfb40ec695a408e67c3c27e2ab14ea2a7a8643646fde
 securityContext:
   container:
     readOnlyRootFilesystem: false