chore: Update CHANGELOG for v2.1.0

Added a CHANGELOG entry for the v2.1.0 version.

CHANGELOG.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## 2.1.0
+
+- Add support for sign in tokens API operations.
+- Add `LegalAcceptedAt` to `User` and the ability to `SkipLegalChecks` when creating or updating a `User`.
+- Add `EmailAddressQuery`, `PhoneNumberQuery` and `UsernameQuery` to `user.ListParams`.
+- Add `RoleName` field to `OrganizationInvitation` and `OrganizationMembership`.
+- Add support for deleting a user's external account via the `user.DeleteExternalAccount` method.
+- Add support for listing all organization invitations for a user with the `user.ListOrganizationInvitations` method.
+- Add support for listing all organization invitations for an instance with the `organizationinvitation.ListFromInstance` method.
+- Add `RequestingUserID` parameter to `organizationinvitation.RevokeParams`.
+- Update go-jose dependency to v3.0.3.
+
+## 2.0.9
+
 ## 2.0.4
 - Add `IgnoreDotsForGmailAddresses` field to `InstanceRestrictions` and `instancesettings.UpdateRestrictionsParams` (#293).