feat: change pgbouncer repository (#1908)

Author: fedeabih

charts/sentry/values.yaml

@@ -3092,7 +3092,7 @@ pgbouncer:
     user: ''
     password: ''
   image:
-    repository: "bitnami/pgbouncer"
+    repository: "bitnamilegacy/pgbouncer"
     tag: "1.23.1-debian-12-r5"
     pullPolicy: IfNotPresent
   replicas: 2