Update airflow-values to restrict the volume of the worker logs

Change-Id: Ic0216ae3a6adc4741b66d00cc97c4b71557e462b
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/helm/values/airflow-values.yaml b/installers/helm/values/airflow-values.yaml
index 9d05c4f..b574ff4 100644
--- a/installers/helm/values/airflow-values.yaml
+++ b/installers/helm/values/airflow-values.yaml
@@ -38,4 +38,6 @@
 config:
   core:
     dags_folder: "/home/airflow/.local/lib/python3.10/site-packages/osm_ngsa"
-
+workers:
+  persistence:
+    size: 8Gi