[Powershell] - Fallback to prev. version - fix

[Gaurav Saini (gauravsaini04)]

Feature name:

• Powershell

Description:

This PR introduces the following functionality:

• When the latest tag for powershell doesn't have a source binary released yet, then it will continue installing the previous working version for which a source binary will be available

Changelog:

• Updated install.sh
• Updated tests to validate that when a fake powershell version is tried to be downloaded with curl command thus representing trying to access a source binary which is not deployed yet, then will pick up the binary for the tag which will eventually work successfully.
• Updated devcontainer-feature.json to update the patch version for this feature.

Checklist:

• Checked that applied changes work as expected

[Samruddhi Khandale (samruddhikhandale)]

Looks good, thanks!