I was installing OLS using the deb repository on Ubuntu 24.04 when I received the falling warning.
I took a quick look inside the deb for OLS 1.7.19 and found the following in the postinst file.
I am not sure if this is the only instance of it though.
chown: warning: '.' should be ':': ‘lsadm.lsadm’
chown: warning: '.' should be ':': ‘lsadm.lsadm’
chown: warning: '.' should be ':': ‘lsadm.lsadm’
chown lsadm.lsadm $sslcert; chmod 400 $sslcert;
chown lsadm.lsadm $sslkey; chmod 400 $sslkey;
chown lsadm.lsadm $sslkey; chmod 400 $sslkey;