Merge pull request #7459 from TechEmpower/dependabot/pip/frameworks/Python/flask/ujson-5.4.0

Bump ujson from 5.2.0 to 5.4.0 in /frameworks/Python/flask

frameworks/Python/flask/requirements-pypy.txt

@@ -11,4 +11,4 @@ MarkupSafe==2.0.1
 meinheld==1.0.2
 uWSGI==2.0.19.1
 Werkzeug==2.0.1
-ujson==5.2.0
+ujson==5.4.0

frameworks/Python/flask/requirements.txt

@@ -12,5 +12,5 @@ MarkupSafe==2.0.1
 meinheld==1.0.2
 uWSGI==2.0.19.1
 Werkzeug==2.0.1
-ujson==5.2.0
+ujson==5.4.0
 orjson==3.6.0