CSO requirement software

In the release notes:

https://www.juniper.net/documentation/en_US/cso5.3.0/information-products/topic-collections/release-notes/5.3.0/jd0e85.html#jd0e90

2020-08  CSO 5.3     

SRX Series CPE devices:     Junos OS Release 19.3R2-S3