Change deploy process scripts to make it Linux friendly

[andyinaus]

Background

We are using Linux container to deploy a new release now.

Issue(s) found while switching to a Linux OS are:

1. $env:TEMP is only available in Windows OS Solution: Use cross-platform temp path ([System.IO.Path]::GetTempPath()) instead
2. Linux OS uses case sensitive file system whereas Windows does not. Solution: Renaming files instead.

Note: If you ever encountered any issue(s) with FileNotFound due to this renaming, please ensure all the files renamed in this PR are named correctly in your local/remote branch.

How to review this PR

Quality ✔️

Pre-requisites

• [x] I have considered informing or consulting the right people, e.g.:
  • For changes to the execution pipeline: #topic-execution
  • For other changes, consider the other #topic-... channels
• [x] I have considered whether this should be a patch or wait for a minor.
• [x] I have considered appropriate testing for my change.