🩹 [Patch]: Update Dependabot configuration to include labels for GitHub Actions

[MariusStorhaug]

Description

This pull request makes a small configuration update to the Dependabot settings. It adds default labels to pull requests created for GitHub Actions dependencies, making them easier to identify and filter.

• Added the dependencies and github-actions labels to Dependabot PRs for GitHub Actions in .github/dependabot.yml.

[Copilot]

Pull Request Overview

This PR adds default labels to Dependabot configuration for GitHub Actions dependencies to improve pull request organization and filtering.

• Added dependencies and github-actions labels to the GitHub Actions package ecosystem configuration

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