chore: unknown values should just be an empty string

Emyrk · Emyrk · commit 276e06084727 · 2025-06-20T10:13:15.000-05:00
diff --git a/types/value.go b/types/value.go
@@ -12,7 +12,7 @@ import (
 )
 
 const (
-	UnknownStringValue = "??"
+	UnknownStringValue = ""
 )
 
 type NullHCLString struct {
