Case-sensitive GITHUB_HEAD_REF_SLUG about github-slug-action

[rlespinasse]

@cpeck-bi I add a _CS suffix available on _SLUG or _SLUG_URL variables.

Waiting to be review and merged, you can test this PR using rlespinasse/github-slug-action@sensitive

name: Test it
on: push
jobs:
  test-it:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: rlespinasse/github-slug-action@sensitive
      - name: Case-sensitive GITHUB_HEAD_REF_SLUG
        run: echo "head ref (case-sensitive): ${{ env.GITHUB_HEAD_REF_SLUG_CS }}"

[cpeck-bi]

Nice! Look great, thank you

[rlespinasse]

🎉 This issue has been resolved in version 3.4.0 🎉

The release is available on GitHub release

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