Fix Security Vulnerability CVE-2022-37734

The library com.graphql-java:graphql-java-extended-scalars was updated from version 18.1 to 19.0 in order to address CVE-2022-37734.

(CMS-22164)

Expose id of CMPlaceholder

Expose the CMPlaceholder property id as placeholderId, since before it has been shadowed via the content id.

(CMS-21968)