feat: add permissions for PEN_READONLY

Author: trev-dev

api/src/main/resources/db/migration/V1.0.8__DIGITALID_API.sql

@@ -0,0 +1,6 @@
+GRANT SELECT ON ACCESS_CHANNEL_CODE TO PEN_READONLY;
+GRANT SELECT ON DIGITAL_ID_EVENT TO PEN_READONLY;
+GRANT SELECT ON DIGITAL_ID_SHEDLOCK TO PEN_READONLY;
+GRANT SELECT ON DIGITAL_IDENTITY TO PEN_READONLY;
+GRANT SELECT ON FLYWAY_SCHEMA_HISTORY TO PEN_READONLY;
+GRANT SELECT ON IDENTITY_TYPE_CODE TO PEN_READONLY;