Bump nednl consumer to not pull t=now for history

We used to clip pulled historical data at "now", this pulls the dummy value the API provides as genuine data is not available yet. New cut off at "now" - 15 minutes.

Author: AUdaltsova

src/airflow_dags/dags/uk/consume-ned-nl-dag.py

@@ -27,7 +27,7 @@
 ned_nl_consumer = ContainerDefinition(
     name="ned-nl-consumer",
     container_image="ghcr.io/openclimatefix/solar-consumer",
-    container_tag="1.4.13",
+    container_tag="1.4.14",
     container_secret_env={
         f"{env}/rds/pvsite": ["DB_URL"],
         f"{env}/consumer/nednl": ["APIKEY_NEDNL"],