chore(deps): update container image cthulhoo/ttrss-web-nginx to latest@63a8afb by renovate (#23545)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| cthulhoo/ttrss-web-nginx | digest | `fb3ba16` -> `63a8afb` |

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This PR has been generated by [Renovate
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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: 18.1.5
+version: 18.1.6

charts/stable/tt-rss/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: cthulhoo/ttrss-web-nginx
   pullPolicy: IfNotPresent
-  tag: latest@sha256:fb3ba16892b2702ae09c80ce52bc9904b6fb1b0ade44527ba5c29a65e07e3459
+  tag: latest@sha256:63a8afb2b17468899bfc03ff191ed90e9fb077fc40ef575eb4aa5505c8c72804
 updaterImage:
   repository: cthulhoo/ttrss-fpm-pgsql-static
   pullPolicy: IfNotPresent