chore(deps): bump flask-celeryext from 0.4.1 to 0.4.3 (#8872)

Bumps [flask-celeryext](https://github.com/inveniosoftware/flask-celeryext) from 0.4.1 to 0.4.3.
- [Release notes](https://github.com/inveniosoftware/flask-celeryext/releases)
- [Changelog](https://github.com/inveniosoftware/flask-celeryext/blob/master/CHANGES.rst)
- [Commits](inveniosoftware/flask-celeryext@v0.4.1...v0.4.3)

---
updated-dependencies:
- dependency-name: flask-celeryext
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -53,7 +53,7 @@ Flask-SQLAlchemy = "2.5.1"
 Flask-Login = "0.6.2"
 Flask-Scrypt = "0.1.3.6"
 flask-jwt-extended = "3.25.0"
-flask-celeryext = "0.4.1"
+flask-celeryext = "0.4.3"
 werkzeug = "2.0.3"
 omise = "0.12.0"
 requests-oauthlib = "1.3.1"