Update Ubuntu Incremental GHA to clean up old builds

### General Summary

The old builds remain and cause the download to be large (~8 GB). For example, the build artifact download for this [CI check](https://github.com/NREL/OpenStudio/actions/runs/20145460292?pr=5551) is 7.5 GB.

### Detailed Description

Delete old .deb and .tar.gz files at the beginning of the GHA workflow

### Possible Implementation

_No response_