Symfony version(s) affected: 3.4.39

Description
This is working until today's 3.4.39 update. using env in security.yaml causes this error.

Invalid type for path "security.firewalls.main.remember_me.lifetime". Expected int, but got string.

How to reproduce
inside of security.yaml

lifetime: '%env(int:REMEMBER_ME_COOKIE_LIFETIME)%'

Possible Solution
Remove these lines
https://github.com/symfony/symfony/pull/35910/files#diff-63961cbd5c56cdeb2e94e6024d58327fR148-R149

Additional context