Bump ujson from 4.0.1 to 4.0.2

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 4.0.1 to 4.0.2.
- [Release notes](https://github.com/ultrajson/ultrajson/releases)
- [Commits](ultrajson/ultrajson@4.0.1...4.0.2)

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

requirements.txt

@@ -30,7 +30,7 @@ simplejson==3.17.2
 six==1.15.0
 transaction==3.0.1
 translationstring==1.4
-ujson==4.0.1
+ujson==4.0.2
 urllib3==1.26.2
 venusian==3.0.0
 waitress==1.4.4