fix: add german suspend email template

[tmair]

The suspend template will be sent to a suspended user, if it is not customized. This is a user facing template and should be translated in order to prevent emails with english and german text content.

What does this PR do?

These changes will impact:

• [ ] commenters
• [ ] moderators
• [ ] admins
• [ ] developers

What changes to the GraphQL/Database Schema does this PR introduce?

Does this PR introduce any new environment variables or feature flags?

If any indexes were added, were they added to INDEXES.md?

How do I test this PR?

Were any tests migrated to React Testing Library?

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