[stable/airflow] Fix Failing Git Sync Host Key Verification (#22162)

Signed-off-by: Bernd Hansen <bernd@bnerd.com>

stable/airflow/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Airflow is a platform to programmatically author, schedule and monitor workflows
 name: airflow
-version: 6.7.2
+version: 6.7.3
 appVersion: 1.10.4
 icon: https://airflow.apache.org/_images/pin_large.png
 home: https://airflow.apache.org/

stable/airflow/templates/configmap-git-clone.yaml

@@ -19,6 +19,7 @@ data:
     mkdir -p ~/.ssh/
     cp -rL /keys/* ~/.ssh/
     chmod 600 ~/.ssh/*
+    ssh-keyscan -H $REPO_HOST >> ~/.ssh/known_hosts
     echo -e "HOST $REPO_HOST\n  IdentityFile ~/.ssh/$PRIVATE_KEY" > ~/.ssh/config
     {{- end }}
     # Init Containers will re-run on Pod restart. Remove the directory's contents
@@ -39,6 +40,7 @@ data:
     mkdir -p ~/.ssh/
     cp -rL /keys/* ~/.ssh/
     chmod 600 ~/.ssh/*
+    ssh-keyscan -H $REPO_HOST >> ~/.ssh/known_hosts
     echo -e "HOST $REPO_HOST\n  IdentityFile ~/.ssh/$PRIVATE_KEY" > ~/.ssh/config
     {{- end }}
     {{- if eq .Values.dags.initContainer.enabled  false }}