Bump ncipollo/release-action from 1.12.0 to 1.15.0

Bumps [ncipollo/release-action](https://github.com/ncipollo/release-action) from 1.12.0 to 1.15.0.
- [Release notes](https://github.com/ncipollo/release-action/releases)
- [Commits](ncipollo/release-action@v1.12.0...v1.15.0)

---
updated-dependencies:
- dependency-name: ncipollo/release-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/releaser.yml

@@ -44,7 +44,7 @@ jobs:
       run: qgis-plugin-ci changelog ${GITHUB_REF/refs\/tags\//} >> release.md
 
     - name: Create release on GitHub
-      uses: ncipollo/release-action@v1.12.0
+      uses: ncipollo/release-action@v1.15.0
       with:
         bodyFile: release.md
         generateReleaseNotes: true