Bump tinymce from 5.10.9 to 7.5.0

Bumps [tinymce](https://github.com/tinymce/tinymce/tree/HEAD/modules/tinymce) from 5.10.9 to 7.5.0.
- [Changelog](https://github.com/tinymce/tinymce/blob/main/modules/tinymce/CHANGELOG.md)
- [Commits](https://github.com/tinymce/tinymce/commits/7.5.0/modules/tinymce)

---
updated-dependencies:
- dependency-name: tinymce
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -11,7 +11,7 @@
   },
   "optionalDependencies": {
     "jquery": "^3.7.1",
-    "tinymce": "^5.10.9",
+    "tinymce": "^7.5.0",
     "openpgp": "^5.0.0",
     "codemirror": "^5.58.3",
     "bootstrap": "^4.5.3",