Firmware SW003900_324 release notes

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Z-PASS1/Z-PASS2
Z-PASS1-R01/Z-PASS2-R01
Z-PASS1-IO/Z-PASS2-IO
Z-PASS2-IO-4G-EU/Z-PASS2-IO-4G-WW
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FIX
- Fix: under particular conditions could occur a failure to send email on alarm OFF
- Fix: under particular conditions could occur a block on sending PUBLISH MQTT