chore(deps): update container image cthulhoo/ttrss-web-nginx to latest@c3f9b6f by renovate (#22623)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| cthulhoo/ttrss-web-nginx | digest | `d52c5d8` -> `c3f9b6f` |

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This PR has been generated by [Renovate
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charts/stable/tt-rss/Chart.yaml

@@ -35,4 +35,4 @@ sources:
   - https://hub.docker.com/r/cthulhoo/ttrss-fpm-pgsql-static
   - https://hub.docker.com/r/cthulhoo/ttrss-web-nginx
 type: application
-version: 17.0.14
+version: 17.0.15

charts/stable/tt-rss/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: cthulhoo/ttrss-web-nginx
   pullPolicy: IfNotPresent
-  tag: latest@sha256:d52c5d80d257f2abaf826685eca2fb2d8b0331a739399441dcceccee914ce0e7
+  tag: latest@sha256:c3f9b6f3b329f5f7c941f1e2a02e5be6028fb7ebfe3a39a5fd0e9c2d306719c2
 updaterImage:
   repository: cthulhoo/ttrss-fpm-pgsql-static
   pullPolicy: IfNotPresent