Bump ujson from 5.2.0 to 5.4.0

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 5.2.0 to 5.4.0.
- [Release notes](https://github.com/ultrajson/ultrajson/releases)
- [Commits](https://github.com/ultrajson/ultrajson/compare/5.2.0...5.4.0)

---
updated-dependencies:
- dependency-name: ujson
  dependency-type: direct:production
...

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

setup.py

@@ -44,7 +44,7 @@ setup(
         'filetype==1.0.9',
         'grpcio==1.38.0',
         'lbry-rocksdb==0.8.2',
-        'ujson==5.2.0'
+        'ujson==5.4.0'
     ],
     extras_require={
         'lint': ['pylint==2.10.0'],