Ignore 'brands' in validate workflow

Add an ignore: 'brands' entry to the hacs/action step in .github/workflows/validate.yaml so brand packages are excluded from integration validation, preventing false positives or validation failures for brand-only repositories.

Author: koosoli

.github/workflows/validate.yaml

@@ -15,3 +15,4 @@ jobs:
         uses: "hacs/action@main"
         with:
           category: "integration"
+          ignore: "brands"