Describe the bug

label and label_singular are transformed to lower case when they are upper case by intention in the config.yml. This is at least true for the German locale.

To Reproduce

Write label: Autor in the config.yml

Expected behavior

I expect the label of the field or panel to be "Autor"

Screenshots

Applicable Versions:

• Netlify CMS version: 2.10.50
• Git provider: GitLab
• OS: Manjaro Linux
• Browser version: Chromium 83.0.4103.61

CMS configuration

- label: "Metadaten des Artikels"
        name: "article"
        file: "content/de/metadata/article-metadata.inc.yml"
        fields:
          - { label: Titel, name: title, widget: string }
          - label: Autor_innen
            label_singular: Autor_in
            name: author
[...]
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