Build(deps): Bump jspreadsheet-ce from 4.14.0 to 4.15.0 (#29528)

Bumps [jspreadsheet-ce](https://github.com/jspreadsheet/ce) from 4.14.0 to 4.15.0.
- [Release notes](https://github.com/jspreadsheet/ce/releases)
- [Commits](https://github.com/jspreadsheet/ce/commits)

---
updated-dependencies:
- dependency-name: jspreadsheet-ce
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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app/assets/javascripts/discourse/package.json

@@ -30,7 +30,7 @@
     "handlebars": "^4.7.8",
     "highlight.js": "^11.10.0",
     "immer": "^10.1.1",
-    "jspreadsheet-ce": "^4.14.0",
+    "jspreadsheet-ce": "^4.15.0",
     "morphlex": "^0.0.16",
     "pretty-text": "workspace:1.0.0"
   },