Use new variable script from Pull Request 347

[VikingTristan]

Introduce new variable script from #347

Description

This will make our Github Actions run again by using a more safe approach to variables. By using parts of the incoming #347 pull request, develop branch won't deviate from incoming code and merging will be easier.

Motivation and Context

Github actions won't run using deprecated commands.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have updated the CHANGELOG document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[github-actions]

Size Change: 0 B

Total Size: 331 kB

ℹ️ View Unchanged

Filename	Size	Change
dist/PullRequest/scripts/app.js	161 kB	0 B
dist/PullRequest/scripts/dg-dashboard.js	65.6 kB	0 B
dist/PullRequest/scripts/dg-style.js	150 B	0 B
dist/PullRequest/scripts/dg.js	53.3 kB	0 B
dist/PullRequest/styles/app.css	670 B	0 B
dist/PullRequest/styles/dg-style.css	50 kB	0 B

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[asbjornu]

👏