🩹 [Patch]: Add tests for more use-cases

[MariusStorhaug]

Description

This pull request includes several updates to the Action-Test workflow configuration in the .github/workflows/Action-Test.yml file. The main changes involve updating the token and credentials handling to use matrix strategies for better flexibility and security.

Improvements to token handling:

• Updated the token reference from TEST_PAT to TEST_USER_PAT in the Action-Test job.
• Changed the token reference for ActionTestWithFGPAT to use a matrix strategy, allowing for different tokens based on the matrix configuration.

Enhancements to GitHub App credentials:

• Updated the GitHub App credentials handling in the ActionTestWithGitHubApp job to use a matrix strategy, allowing for different client IDs and private keys based on the matrix configuration. [1] [2]

Type of change

• 📖 [Docs]
• 🪲 [Fix]
• 🩹 [Patch]
• ⚠️ [Security fix]
• 🚀 [Feature]
• 🌟 [Breaking change]

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas