Bump flask-ckeditor from 0.4.6 to 0.5.1

Bumps [flask-ckeditor](https://github.com/helloflask/flask-ckeditor) from 0.4.6 to 0.5.1.
- [Release notes](https://github.com/helloflask/flask-ckeditor/releases)
- [Changelog](https://github.com/helloflask/flask-ckeditor/blob/master/CHANGES.rst)
- [Commits](helloflask/flask-ckeditor@0.4.6...0.5.1)

---
updated-dependencies:
- dependency-name: flask-ckeditor
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -5,7 +5,7 @@ Bootstrap-Flask==2.3.3
 click==8.1.7
 dill==0.3.7
 Flask==2.3.3
-Flask-CKEditor==0.4.6
+Flask-CKEditor==0.5.1
 Flask-Login==0.6.3
 Flask-SQLAlchemy==3.1.1
 Flask-WTF==1.2.1