Following up on PR #93, I've confirmed that software-properties-common is also not actually used in the Ubuntu installation function.

Testing Results:

• Ubuntu 22.04: Setup script runs successfully without software-properties-common

Current Status:

• PR Remove the software-properties-common package which is not present in trixie #93 removes it from Debian installation
• Ubuntu installation (line 146 in setup.sh) still includes this unnecessary package

Proposed Action:
Remove software-properties-common from the Ubuntu installation function as well, similar to the Debian fix in PR #93.

This would improve consistency and avoid potential issues if Ubuntu also removes this package in future releases.