[prometheus-mysql-exporter] deprecate (#23700)

Signed-off-by: Naseem <naseem@transit.app>

Author: Naseem

stable/prometheus-mysql-exporter/Chart.yaml

@@ -1,13 +1,11 @@
 apiVersion: v1
-description: A Helm chart for prometheus mysql exporter with cloudsqlproxy
+# The prometheus-mysql-exporter chart is deprecated and no longer maintained. For details deprecation,
+# including how to un-deprecate a chart see the PROCESSES.md file.
+deprecated: true
+description: DEPRECATED A Helm chart for prometheus mysql exporter with cloudsqlproxy
 name: prometheus-mysql-exporter
-version: 0.7.0
+version: 0.7.1
 home: https://github.com/prometheus/mysqld_exporter
 appVersion: v0.11.0
 sources:
   - https://github.com/prometheus/mysqld_exporter
-maintainers:
-  - name: juanchimienti
-    email: juan.chimienti@gmail.com
-  - name: monotek
-    email: monotek23@gmail.com

stable/prometheus-mysql-exporter/README.md

@@ -1,5 +1,7 @@
 # Prometheus Mysql Exporter
 
+DEPRECATED and moved to <https://github.com/prometheus-community/helm-charts>
+
 -   Installs prometheus [mysql exporter](https://github.com/prometheus/mysqld_exporter)
 
 ## TL;DR;

stable/prometheus-mysql-exporter/templates/NOTES.txt

@@ -1,3 +1,5 @@
+DEPRECATED and moved to <https://github.com/prometheus-community/helm-charts>
+
 1. Get the application URL by running these commands:
 {{- if contains "NodePort" .Values.service.type }}
   export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "prometheus-mysql-exporter.fullname" . }})