⬆️ Bump softprops/action-gh-release from 1 to 2 (#671)

Bumps [softprops/action-gh-release](https://github.com/softprops/action-gh-release) from 1 to 2.
- [Release notes](https://github.com/softprops/action-gh-release/releases)
- [Changelog](https://github.com/softprops/action-gh-release/blob/master/CHANGELOG.md)
- [Commits](softprops/action-gh-release@v1...v2)

---
updated-dependencies:
- dependency-name: softprops/action-gh-release
  dependency-version: '2'
  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/publish.yml

@@ -91,7 +91,7 @@ jobs:
           }
           EOF
       - name: Upload archives to release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         with:
           files: |
             lecture-python-html-${{ github.ref_name }}.tar.gz