Bump release-drafter/release-drafter from 6 to 7 (#255)

Bumps [release-drafter/release-drafter](https://github.com/release-drafter/release-drafter) from 6 to 7.
- [Release notes](https://github.com/release-drafter/release-drafter/releases)
- [Commits](release-drafter/release-drafter@v6...v7)

---
updated-dependencies:
- dependency-name: release-drafter/release-drafter
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release-drafter.yml

@@ -32,7 +32,7 @@ jobs:
           echo New target version: $datepre.$newpost
           echo "::set-output name=version::$datepre.$newpost"
       - name: Run Release Drafter
-        uses: release-drafter/release-drafter@v6
+        uses: release-drafter/release-drafter@v7
         with:
           tag: ${{ steps.version.outputs.version }}
           name: ${{ steps.version.outputs.version }}