chore(deps): bump django-pghistory from 2.7.0 to 3.2.0

Bumps [django-pghistory](https://github.com/Opus10/django-pghistory) from 2.7.0 to 3.2.0.
- [Changelog](https://github.com/Opus10/django-pghistory/blob/main/CHANGELOG.md)
- [Commits](Opus10/django-pghistory@2.7.0...3.2.0)

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

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

pyproject.toml

@@ -42,7 +42,7 @@ django-filter = "^2.4.0"
 django-localflavor = "^3.1"
 django-markdown-deux = "^1.0.6"
 django-mathfilters = "*"
-django-pghistory = "^2.7.0"
+django-pghistory = "^3.2.0"
 django-ratelimit = "^4.0.0"
 django-storages = "^1.13.2"
 djangorestframework = "^3.14.0"