Remove duplicate keys from valid.json

Signed-off-by: Graham <gpe@openrs2.org>

archive/src/main/kotlin/org/openrs2/archive/key/KeyExporter.kt

@@ -150,7 +150,7 @@ public class KeyExporter @Inject constructor(
         """.trimIndent()
 
         private val EXPORT_VALID_QUERY = """
-            SELECT (k.key).k0, (k.key).k1, (k.key).k2, (k.key).k3
+            SELECT DISTINCT (k.key).k0, (k.key).k1, (k.key).k2, (k.key).k3
             FROM keys k
             JOIN containers c ON c.key_id = k.id
             ORDER BY k.id ASC