az upgrade confusing output

[jw3126]

This is autogenerated. Please review and update as needed.

Describe the bug

Command Name
az upgrade

Errors:

Your current Azure CLI version is 2.18.0. Latest version available is 2.29.0.
...
azure-cli is already the newest version (2.18.0-1).
0 upgraded, 0 newly installed, 0 to remove and 12 not upgraded.

Output is not self consistent. First line says 2.29.0 is latest, later it claims (2.18.0-1). is latest.

Environment Summary

Linux-5.11.0-38-generic-x86_64-with-glibc2.33
Python 3.9.5
Installer: DEB

azure-cli 2.18.0 *

Extensions:
azure-devops 0.19.0

Additional Context

[yonzhan]

@jiasli for awareness

[jw3126]

As a workaround I uninstalled azurecli and installed it again via pip to get the latest version.