Update run-a-single-node-from-branch.yml with new Github App

[AntiD2ta]

Changes

• Replace REPOSITORY_DISPATCH_TOKEN with new Github App credentials.

Types of changes

What types of changes does your code introduce?

• Bugfix (a non-breaking change that fixes an issue)
• New feature (a non-breaking change that adds functionality)
• Breaking change (a change that causes existing functionality not to work as expected)
• Optimization
• Refactoring
• Documentation update
• Build-related changes
• Other: Description

Testing

Requires testing

• Yes
• No

If yes, did you write tests?

• Yes
• No

Documentation

Requires documentation update

• Yes
• No

If yes, link the PR to the docs update or the issue with the details labeled docs. Remove if not applicable.

Requires explanation in Release Notes

• Yes
• No

If yes, fill in the details here. Remove if not applicable.

Remarks

This PR can be used as reference for subsequent fixes to the CI where REPOSITORY_DISPATCH_TOKEN was used.

[rubo]

We already have #7191

[rubo]

@cbermudez97 Close this?