Make default instance public

Signed-off-by: Paolo Di Tommaso <[email protected]>

Author: pditommaso

plugins/nf-sqldb/src/main/nextflow/sql/config/DriverRegistry.groovy

@@ -11,7 +11,7 @@ class DriverRegistry {
 
     Map<String, String> drivers = [:]
 
-    static DriverRegistry DEFAULT = new DriverRegistry()
+    static public DriverRegistry DEFAULT = new DriverRegistry()
 
     DriverRegistry(){
         initDefaultDrivers()