🐛Package manager installation: systemd service not being restarted after update

If cloudflared is updated trough package manager, and it is installed as a systemd service, there is no mechanism to restart the service after the update.

**To Reproduce**
Steps to reproduce the behavior:
1. Install cloudflared from package manager
2. Install cloudflared as service `cloudflared service install`, `systemctl start cloudflared
`
3. Update the package
4. Observe that the service is never restarted, thus the old version remains running until reboot, etc.

**Expected behavior**
There should be a mechanism to restart the service whenever an update is performed.

**Environment and versions**
- OS: Linux
- Architecture: AMD
- Version: 2022.10.3