Bump softprops/action-gh-release from 2.0.6 to 2.0.8 (#588)

Bumps [softprops/action-gh-release](https://github.com/softprops/action-gh-release) from 2.0.6 to 2.0.8.
- [Release notes](https://github.com/softprops/action-gh-release/releases)
- [Changelog](https://github.com/softprops/action-gh-release/blob/master/CHANGELOG.md)
- [Commits](a74c6b72af...c062e08bd5)

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

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

.github/workflows/github-release.yml

@@ -23,7 +23,7 @@ jobs:
           version=`git describe --dirty --tags || echo unknown`
           cp -r dist synapse-admin-$version
           tar chvzf dist/synapse-admin-$version.tar.gz synapse-admin-$version
-      - uses: softprops/action-gh-release@a74c6b72af54cfa997e81df42d94703d6313a2d0
+      - uses: softprops/action-gh-release@c062e08bd532815e2082a85e87e3ef29c3e6d191
         with:
           files: dist/*.tar.gz
         env: