chore(helm): update image docker.io/cthulhoo/ttrss-web-nginx digest to 7880772 (#28685)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/cthulhoo/ttrss-web-nginx | digest | `5f9c022` -> `7880772` |

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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: 18.2.9
+version: 18.2.10

charts/stable/tt-rss/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: docker.io/cthulhoo/ttrss-web-nginx
   pullPolicy: IfNotPresent
-  tag: latest@sha256:5f9c0222a6650ec2db5d752f533169eeae91543ad733b805a535ee58b175975e
+  tag: latest@sha256:7880772daafcb305d119a263dfb97d24481f522ac03e4e749cca64d9a674be33
 updaterImage:
   repository: docker.io/cthulhoo/ttrss-fpm-pgsql-static
   pullPolicy: IfNotPresent