EDIT:
this can be solved by passing a user agent to the check.
when running
$ curl -I https://support.rstudio.com/hc/en-us | grep http.2 -i
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
HTTP/2 403
is that supposed to happen? if not, can it be fixed?
(happens on other sites aswell)