build(deps): bump linuxserver/nginx from 1.22.1 to 1.26.2

Bumps [linuxserver/nginx](https://github.com/linuxserver/docker-nginx) from 1.22.1 to 1.26.2.
- [Release notes](https://github.com/linuxserver/docker-nginx/releases)
- [Commits](https://github.com/linuxserver/docker-nginx/compare/1.22.1-r0-ls204...1.26.2-r0-ls286

)

---
updated-dependencies:
- dependency-name: linuxserver/nginx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile.help

-FROM ghcr.io/linuxserver/nginx:1.22.1
+FROM ghcr.io/linuxserver/nginx:1.26.2
 
 ARG VERSION=dev
 ENV ARTIFACT=webHelpSPCH2-all.zip