Finally figured it out. The ZScaler cert needed to be copied into /etc/pki/ca-trust/source/anchors/Zscaler Root CA.crt, then update-ca-trust extract needed to be executed (this is for Amazon Linux distros)
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Finally figured it out. The ZScaler cert needed to be copied into /etc/pki/ca-trust/source/anchors/Zscaler Root CA.crt, then update-ca-trust extract needed to be executed (this is for Amazon Linux distros)