IONOS(build): refactor job URL extraction with safer string handling and reusable action

[Copilot]

Summary

Refactors the GitHub Actions job URL extraction logic to handle special characters safely and eliminates code duplication through a reusable composite action.

Job Name String Handling:

• Replaced inline string interpolation in jq filters with --arg parameter for safer string comparison
• Prevents potential failures when job names contain special characters requiring escaping

Code Consolidation:

• Extracted 28 lines of duplicated API request logic into .github/actions/get-job-url/action.yml
• Both build-external-apps and Push to artifactory jobs now use the composite action
• Single source of truth for error handling and job URL fetching

Before:

JOB_URL=$(echo "$RESPONSE_BODY" | jq -r '.jobs[] | select(.name == "build-external-apps (${{ matrix.app_info.name }})") | .html_url')

After:

- uses: ./.github/actions/get-job-url
  with:
    job-name: 'build-external-apps (${{ matrix.app_info.name }})'
    github-token: ${{ github.token }}
    repository: ${{ github.repository }}
    run-id: ${{ github.run_id }}

TODO

• Test composite action behavior in CI run

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

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