Agent: dependency on invalid OpenSSL package on Debian

vagrant@node1-cb665-ubuntu20:~$ sudo dpkg -i cbhealthagent-linux-amd64-0.3.0-359.deb

Selecting previously unselected package cbhealthagent.

(Reading database ... 118141 files and directories currently installed.)

Preparing to unpack cbhealthagent-linux-amd64-0.3.0-359.deb ...

Unpacking cbhealthagent (0.3.0) ...

dpkg: dependency problems prevent configuration of cbhealthagent:

 cbhealthagent depends on openssl-libs; however:

  Package openssl-libs is not installed.

dpkg: error processing package cbhealthagent (--install):

 dependency problems - leaving unconfigured

Errors were encountered while processing:

 cbhealthagent

vagrant@node1-cb665-ubuntu20:~$ sudo apt update

Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease

Hit:2 http://us.archive.ubuntu.com/ubuntu focal InRelease

Hit:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease

Hit:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease

Reading package lists... Done

Building dependency tree

Reading state information... Done

163 packages can be upgraded. Run 'apt list --upgradable' to see them.

vagrant@node1-cb665-ubuntu20:~$ sudo apt install openssl-libs

Reading package lists... Done

Building dependency tree

Reading state information... Done

Package openssl-libs is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

E: Package 'openssl-libs' has no installation candidate