Don't log deprecations twice in prod (#1454)

Author: philbates35

symfony/monolog-bundle/3.7/config/packages/monolog.yaml

@@ -45,6 +45,7 @@ when@prod:
                 action_level: error
                 handler: nested
                 excluded_http_codes: [404, 405]
+                channels: ["!deprecation"]
                 buffer_size: 50 # How many messages should be saved? Prevent memory leaks
             nested:
                 type: stream