Bump softprops/action-gh-release from 1 to 2

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](https://github.com/softprops/action-gh-release/compare/v1...v2)

---
updated-dependencies:
- dependency-name: softprops/action-gh-release
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/CI.yml

@@ -53,7 +53,7 @@ jobs:
 
       - name: Release
         if: github.ref == 'refs/heads/mainline'
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         with:
           #files: ${{ github.workspace }}/ISO/*.tar.gz
           #files: ${{ github.workspace }}/ISO/*.iso