ical links on calendar pages causing Google indexing issues

Hi,

I received an email from Google warning me about page indexing issues on our website. The biggest problem seems to be on our calendar items. Each item appears on Google's list of problem pages with an ical link. For example:

https://www.thirstcolorado.com/calendar/2024/5/4/keddjra?format=ical

How do I fix this problem, or does it not really matter for our Google search rankings?