build(deps): bump django from 3.2.15 to 3.2.16 (#1378)

* build(deps): bump django from 3.2.15 to 3.2.16

Bumps [django](https://github.com/django/django) from 3.2.15 to 3.2.16.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.2.15...3.2.16)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

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

* Lock properly

Co-Authored-By: faucomte97 <florian.aucomt1@ocado.com>