Bump the tiptap group in /org.knime.ui.js with 2 updates

Bumps the tiptap group in /org.knime.ui.js with 2 updates: [@tiptap/extension-heading](https://github.com/ueberdosis/tiptap/tree/HEAD/packages/extension-heading) and [@tiptap/vue-3](https://github.com/ueberdosis/tiptap/tree/HEAD/packages/vue-3).


Updates `@tiptap/extension-heading` from 2.26.1 to 3.13.0
- [Release notes](https://github.com/ueberdosis/tiptap/releases)
- [Changelog](https://github.com/ueberdosis/tiptap/blob/develop/packages/extension-heading/CHANGELOG.md)
- [Commits](https://github.com/ueberdosis/tiptap/commits/v3.13.0/packages/extension-heading)

Updates `@tiptap/vue-3` from 2.26.1 to 3.13.0
- [Release notes](https://github.com/ueberdosis/tiptap/releases)
- [Changelog](https://github.com/ueberdosis/tiptap/blob/develop/packages/vue-3/CHANGELOG.md)
- [Commits](https://github.com/ueberdosis/tiptap/commits/v3.13.0/packages/vue-3)

---
updated-dependencies:
- dependency-name: "@tiptap/extension-heading"
  dependency-version: 3.13.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: tiptap
- dependency-name: "@tiptap/vue-3"
  dependency-version: 3.13.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: tiptap
...

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

Author: dependabot[bot]

org.knime.ui.js/package.json

@@ -50,8 +50,8 @@
     "@knime/utils": "^1.8.0",
     "@knime/virtual-tree": "^1.7.0",
     "@open-rpc/client-js": "^1.8.1",
-    "@tiptap/extension-heading": "^2.26.1",
-    "@tiptap/vue-3": "^2.26.1",
+    "@tiptap/extension-heading": "^3.15.3",
+    "@tiptap/vue-3": "^3.15.3",
     "@vueuse/core": "^13.8.0",
     "@vueuse/integrations": "^13.8.0",
     "consola": "3.4.2",