Bump tiptap-extensions from 1.27.0 to 1.28.0 in /js

Bumps [tiptap-extensions](https://github.com/scrumpy/tiptap) from 1.27.0 to 1.28.0.
- [Release notes](https://github.com/scrumpy/tiptap/releases)
- [Commits](https://github.com/scrumpy/tiptap/compare/tiptap-extensions@1.27.0...tiptap-extensions@1.28.0)

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

js/package.json

@@ -27,7 +27,7 @@
     "register-service-worker": "^1.6.2",
     "tippy.js": "^4.3.1",
     "tiptap": "^1.20.1",
-    "tiptap-extensions": "^1.20.1",
+    "tiptap-extensions": "^1.28.0",
     "typeface-signika": "0.0.72",
     "vue": "^2.6.10",
     "vue-apollo": "^3.0.0-rc.6",