chore(deps): update actions/upload-artifact action to v6

Author: renovate[bot]

.github/workflows/release.yml

@@ -61,7 +61,7 @@ jobs:
 
       - name: JReleaser release output
         if: always()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: jreleaser-release-output
           path: |