Use (You can add it as a Scheduler),
/tool fetch url="https://raw.githubusercontent.com/ertugrulturan/Mikrotik-Cloudfront-Adresslist/main/CloudFront.rsc" ; /import file-name=CloudFront.rsc
Tested by RouterOS 7.13.5
routeros-fans/Mikrotik-Cloudfront-Adresslist
RouterOS Auto Update AWS Cloudfront Ipv4 Adress List (.rsc)
RouterOS Script