Changes for 7.0.0rc2

7.0.0rc1 was released as 7.0.0rc2 without any changes

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Changes for 7.0.0rc1

New features:
[ZBXNEXT-9168] replaced the software license with AGPL-3.0-only (Sasha)
[ZBXNEXT-8997] initial implementation for Ember Plus loadable Zabbix agent 2 plugin (esneiders)

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