Bump softprops/action-gh-release from 0.1.14 to 0.1.15 (#1000)

Bump softprops/action-gh-release from 0.1.14 to 0.1.15 (#1000)

Bumps [softprops/action-gh-release](https://github.com/softprops/action-gh-release) from 0.1.14 to 0.1.15.
- [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/1e07f4398721186383de40550babbdf2b84acfc5...de2c0eb89ae2a093876385947365aca7b0e5f844)

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

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