steampipe plugin list hangs if any connection has import_schema = "disabled"

[johnsmyth]

Describe the bug
steampipe plugin list hangs if any connection has import_schema = "disabled"

Steampipe version (steampipe -v)
Steampipe v0.20.6-rc.1

To reproduce
Create a connection with import_schema disabled:

connection "aws_dev" {
 plugin    = "aws"  
 profile   = "dev-aws"
 regions   =  ["us-*", "eu-*","ca-*", "ap-*"]
 import_schema = "disabled"
}

run steampipe plugin list. it will load some connections and then hang...

$ steampipe plugin list
⠸ Loaded 26 of 29 connections

Expected behavior
Steampipe plugin list should work correctly