[Maintenance] Updated mailer config

.env.test

@@ -8,3 +8,4 @@ JWT_PUBLIC_KEY=%kernel.project_dir%/config/jwt/public-test.pem
 JWT_PASSPHRASE=ALL_THAT_IS_GOLD_DOES_NOT_GLITTER_NOT_ALL_THOSE_WHO_WANDER_ARE_LOST
 ###< lexik/jwt-authentication-bundle ###
 MESSENGER_TRANSPORT_DSN=sync://
+MAILER_DSN=null://null

.env.test_cached

@@ -9,3 +9,4 @@ JWT_PUBLIC_KEY=%kernel.project_dir%/config/jwt/public-test.pem
 JWT_PASSPHRASE=ALL_THAT_IS_GOLD_DOES_NOT_GLITTER_NOT_ALL_THOSE_WHO_WANDER_ARE_LOST
 ###< lexik/jwt-authentication-bundle ###
 MESSENGER_TRANSPORT_DSN=sync://
+MAILER_DSN=null://null

config/packages/test/framework.yaml

@@ -2,9 +2,3 @@ framework:
     test: ~
     session:
         storage_factory_id: session.storage.factory.mock_file
-    mailer:
-        dsn: 'null://null'
-    cache:
-        pools:
-            test.mailer_pool:
-                adapter: cache.adapter.filesystem

config/packages/test/mailer.yaml

@@ -1,3 +1,5 @@
 framework:
-    mailer:
-        dsn: 'null://null'
+    cache:
+        pools:
+            test.mailer_pool:
+                adapter: cache.adapter.filesystem

config/packages/test_cached/mailer.yaml

@@ -1,3 +1,2 @@
-framework:
-    mailer:
-        dsn: 'null://null'
+imports:
+    - { resource: "../test/mailer.yaml" }