i18n(de): update deploy guide, cleavr.mdx + heroku.mdx

[deining]

Description (required)

• Adds changes from [i18nIgnore] New deploy guide navigation component #12735 to the German translation of guides/deploy/cleavr.mdx.
• Adds changes from [i18nIgnore] New deploy guide navigation component #12735 to the German translation of guides/deploy/heroku.mdx.

Related issues & labels (optional)

• Suggested label: i18n

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Tracked Files

File	Note
de/guides/deploy/cleavr.mdx	Localization changed, will be marked as complete.
de/guides/deploy/heroku.mdx	Localization changed, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[ArmandPhilippot]

Thank you, LGTM!