Announce helm chart 1.16.0 (#1154)

diff --git a/landing-pages/site/content/en/announcements/_index.md b/landing-pages/site/content/en/announcements/_index.md
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--- a/landing-pages/site/content/en/announcements/_index.md
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+# April 1, 2025
+
+We've just released Apache **Airflow Helm chart 1.16.0**.
+
+đŸ“Ļ ArtifactHub: https://artifacthub.io/packages/helm/apache-airflow/airflow \
+📚 Docs: https://airflow.apache.org/docs/helm-chart/1.16.0/ \
+đŸ› ī¸ Release Notes: https://airflow.apache.org/docs/helm-chart/1.16.0/release_notes.html \
+đŸĒļ Sources: https://airflow.apache.org/docs/helm-chart/1.16.0/installing-helm-chart-from-sources.html
+
 # February 10, 2025
 
 We’ve just released Apache **Airflow 2.10.5**.