Bump django-watson from 1.5.5 to 1.6.0 (#5389)

Bumps [django-watson](https://github.com/etianen/django-watson) from 1.5.5 to 1.6.0.
- [Release notes](https://github.com/etianen/django-watson/releases)
- [Changelog](https://github.com/etianen/django-watson/blob/master/CHANGELOG.markdown)
- [Commits](etianen/django-watson@release-1.5.5...release-1.6.0)

---
updated-dependencies:
- dependency-name: django-watson
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

requirements.txt

@@ -16,7 +16,7 @@ django-crispy-forms==1.13.0
 django_extensions==3.1.3
 django-slack==5.17.6
 django-tagging==0.5.0
-django-watson==1.5.5
+django-watson==1.6.0
 django-prometheus==2.1.0
 Django==3.1.13
 djangorestframework==3.12.4