fix: add Brand type to brand schema

[tinect]

1. Why is this change necessary?

google reports Ungültiger Objekttyp für Feld "brand"

2. What does this change do, exactly?

adjust type for brand

3. Describe each step to reproduce the issue or behaviour.

4. Please link to the relevant issues (if any).

5. Checklist

• I have written tests and verified that they fail without my change
• I have squashed any insignificant commits
• I have created a changelog file with all necessary information about my changes
• I have written or adjusted the documentation according to my changes
• This change has comments for package types, values, functions, and non-obvious lines of code
• I have read the contribution requirements and fulfil them.

[JoshuaBehrens]

@tinect https://github.com/tinect/TinectBrandSeoFix you can brag a bit about having a ready solution as a plugin :D

[tinect]

@tinect https://github.com/tinect/TinectBrandSeoFix you can brag a bit about having a ready solution as a plugin :D

Thank you.... stalker 😆

[shopwareBot]

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[leichteckig]

Thank you @tinect for your contribution! 💙