add changeset

.changeset/happy-cups-design.md

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+---
+"@comet/brevo-api": major
+---
+
+Refactor `email-campaign` and `target-group` entity
+
+Use `createEmailCampaignEntity` for creating `email-campaign` entity. Pass `EmailCampaignContentBlock`, `Scope` and `TargetGroup`.
+
+Use `createTargetGroupEntity` for creating `target-group` entity. Pass `Scope` and optional `BrevoFilterAttributes`