Symfony version(s) affected:
symfony/skeleton 5.1.99

Description
Since this version, when i test debug:route command, this info log appears:
"User Deprecated: Since symfony/dependency-injection 5.1: Not setting the attribute "version" of the node "deprecated" is deprecated" without more information

How to reproduce
Just create a skeleton symfony application, and require api, orm-pack and maker-bundle package.
And then, run "debug:route" command.