Upstream batch push 2025-07-21

What does this MR do?

This MR pushes all available translations from the main-translation branch of our production fork to the upstream GitLab Runner repository.

Changes Overview

1. Adds translated content for documentation pages
2. Ensures consistent formatting across all translated files
3. Maintains directory structure alignment with the original English content

What are the relevant issue numbers?

gitlab-com/localization/docs-site-localization#312 (closed)