npm(deps): bump @tiptap/extension-heading from 2.1.16 to 2.2.0

Bumps [@tiptap/extension-heading](https://github.com/ueberdosis/tiptap/tree/HEAD/packages/extension-heading) from 2.1.16 to 2.2.0.
- [Release notes](https://github.com/ueberdosis/tiptap/releases)
- [Changelog](https://github.com/ueberdosis/tiptap/blob/main/packages/extension-heading/CHANGELOG.md)
- [Commits](https://github.com/ueberdosis/tiptap/commits/v2.2.0/packages/extension-heading)

---
updated-dependencies:
- dependency-name: "@tiptap/extension-heading"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -51,7 +51,7 @@
         "vite": "^5.0.12"
     },
     "dependencies": {
-        "@tiptap/extension-heading": "^2.1.16",
+        "@tiptap/extension-heading": "^2.2.0",
         "@tiptap/extension-paragraph": "^2.1.16",
         "@tiptap/extension-text": "^2.1.16",
         "@tiptap/pm": "^2.1.16",