Two things:
1. Whilst svchost.exe can have a legitimate reason to connect, but it is very unusual to see it in use like this. Normally you see Processes, your browser, etc.
2. The IP address belongs to Google (Google Cloud), so I don't know if that could be misused.
https://www.google.co.uk/search?q=TCP+port+443TCP port 443 is used for encrypted web services.
I'm wondering if some google program/service is trying to connect, but why it is using the svchost.exe service is beyond me.
You could try the - Reporting Possible False Positive File or Website -
https://www.avast.com/false-positive-file-form.php function, but I don't know if it accepts IP addresses.
That said I have tried to submit it and give the link back to this topic.