Update Helm release airflow to v22.4.8

Author: renovate[bot]

charts/airflow/Chart.yaml

@@ -11,11 +11,11 @@ home: https://airflow.apache.org/
 sources:
   - https://github.com/bitnami/charts/tree/main/bitnami/airflow
 type: application
-version: 0.0.2
+version: 0.0.3
 appVersion: "2.10.3"
 dependencies:
 - name: airflow
-  version: 22.4.1
+  version: 22.4.8
   repository:  https://charts.bitnami.com/bitnami
 - name: library-chart
   version: 1.5.34