Title: Updating v8 requires uploading static snapshot at https://storage.googleapis.com/envoyproxy-wee8/v8-{version}.tar.gz ?

Description:
The only way to update v8 is to have the relevant version's snapshot at the above bucket, is that right?
I was hoping to update to v8's main branch until the next release is available, as discussed here, but looks like that is not possible.