sudo.pam: Restore inclusion of pam_limits.so PAM module
Closes: #518464
Background on why this additionally would be needed is outlined in the oss-security post at https://www.openwall.com/lists/oss-security/2021/10/20/2
Closes: #518464
Background on why this additionally would be needed is outlined in the oss-security post at https://www.openwall.com/lists/oss-security/2021/10/20/2