chore(helm): update image docker.io/cthulhoo/ttrss-web-nginx digest to 80e55ee (#28794)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/cthulhoo/ttrss-web-nginx | digest | `7880772` -> `80e55ee` |

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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: 18.2.14
+version: 18.2.15

charts/stable/tt-rss/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: docker.io/cthulhoo/ttrss-web-nginx
   pullPolicy: IfNotPresent
-  tag: latest@sha256:7880772daafcb305d119a263dfb97d24481f522ac03e4e749cca64d9a674be33
+  tag: latest@sha256:80e55ee1cc2b426c5f01bad3cb20494dd7df5adb445c6e4afb227244bceaba21
 updaterImage:
   repository: docker.io/cthulhoo/ttrss-fpm-pgsql-static
   pullPolicy: IfNotPresent