feat: update appVersion to 25.3.0 (#1740)

Author: patsevanton

charts/sentry/Chart.yaml

@@ -3,7 +3,7 @@ name: sentry
 description: A Helm chart for Kubernetes
 type: application
 version: 26.15.1
-appVersion: 25.2.0
+appVersion: 25.3.0
 dependencies:
   - name: memcached
     repository: oci://registry-1.docker.io/bitnamicharts