Merge branch '6.3' into 6.4

* 6.3:
  Update serverVersion for MariaDB

Author: OskarStark

doctrine.rst

@@ -44,7 +44,10 @@ The database connection information is stored as an environment variable called
     DATABASE_URL="mysql://db_user:db_password@127.0.0.1:3306/db_name?serverVersion=5.7"
 
     # to use mariadb:
-    DATABASE_URL="mysql://db_user:db_password@127.0.0.1:3306/db_name?serverVersion=mariadb-10.5.8"
+    # Before doctrine/dbal < 3.7
+    # DATABASE_URL="mysql://db_user:db_password@127.0.0.1:3306/db_name?serverVersion=mariadb-10.5.8"
+    # Since doctrine/dbal 3.7
+    # DATABASE_URL="mysql://db_user:db_password@127.0.0.1:3306/db_name?serverVersion=10.5.8-MariaDB"
 
     # to use sqlite:
     # DATABASE_URL="sqlite:///%kernel.project_dir%/var/app.db"