Change the provider, now the token is not required

so you can use CIVO_TOKEN in the env

civo/provider.go

@@ -14,7 +14,7 @@ func Provider() terraform.ResourceProvider {
 		Schema: map[string]*schema.Schema{
 			"token": {
 				Type:        schema.TypeString,
-				Required:    true,
+				Optional:    true,
 				DefaultFunc: schema.EnvDefaultFunc("CIVO_TOKEN", ""),
 			},
 		},