chore(deps): update ghcr.io/stacklok/dockyard/npx/brightdata-mcp docker tag to v2.8.4

Author: renovate[bot]

registry/brightdata-mcp/spec.yaml

@@ -25,7 +25,7 @@ tags:
   - api
   - automation
   - browser
-image: ghcr.io/stacklok/dockyard/npx/brightdata-mcp:2.8.3
+image: ghcr.io/stacklok/dockyard/npx/brightdata-mcp:2.8.4
 permissions:
   network:
     outbound: