Bump freezegun from 1.3.0 to 1.3.1

Bumps [freezegun](https://github.com/spulec/freezegun) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/spulec/freezegun/releases)
- [Changelog](https://github.com/spulec/freezegun/blob/master/CHANGELOG)
- [Commits](spulec/freezegun@1.3.0...1.3.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -118,7 +118,7 @@ django-extra-views==0.14.0
 bleach==6.1.0
 webencodings==0.5.1
 html5lib==1.1
-freezegun==1.3.0
+freezegun==1.3.1
 gunicorn==21.2.0
 django-storages==1.14.2
 django-cacheds3storage==0.3.0