Update release-drafter/release-drafter action to v6 (#102)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release-notes.yml

@@ -21,7 +21,7 @@ jobs:
         id: extract_branch
         run: echo ::set-output name=value::${GITHUB_REF:11}
       # If it has release drafter:
-      - uses: release-drafter/release-drafter@v5
+      - uses: release-drafter/release-drafter@v6
         if: steps.check_release_drafter.outputs.has_release_drafter == 'true'
         env:
           GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}