Upgrade to Symfony Demo 1.5.1

Symfony 4 triggers functionality which is deprecated as of PHP 7.4.0.

Author: cmb69

pgo/cases/symfony_demo_pdo_mysql/doctrine.yaml

@@ -21,7 +21,7 @@ doctrine:
         url: '%env(resolve:DATABASE_URL)%'
     orm:
         auto_generate_proxy_classes: '%kernel.debug%'
-        naming_strategy: doctrine.orm.naming_strategy.underscore
+        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
         auto_mapping: true
         mappings:
             App:

pgo/cases/symfony_demo_pdo_mysql/phpsdk_pgo.json

@@ -1,5 +1,5 @@
 {
-	"symfony_demo_version": "v1.4.4",
+	"symfony_demo_version": "v1.5.1",
 	"type": "web",
 	"srv_http": "nginx",
 	"srv_db": "mariadb"