Change Invidious default as the current will go down for an extended period.


On October 1st, https://invidio.us/ [will no longer be](https://omar.yt/posts/stepping-away-from-open-source). I would think, that somebody might take over the load of hosting, but that might not happen.

Meanwhile, let us prepare. From [the others](https://instances.invidio.us/) I have been using invidious.snopyta.org and it works fine.

Any objections or am I going to make a PR?