build(deps): bump nginx in /prometheus-php-application-exporter

Bumps nginx from 1.29.7 to 1.29.8.

---
updated-dependencies:
- dependency-name: nginx
  dependency-version: 1.29.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

prometheus-php-application-exporter/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM nginx:1.29.7 AS prometheus-php-application-exporter
+FROM nginx:1.29.8 AS prometheus-php-application-exporter
 ENV TZ="Europe/Berlin"
 ENV NGINX_ENTRYPOINT_QUIET_LOGS=1
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone