Bump ujson from 5.12.0 to 5.12.1

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 5.12.0 to 5.12.1.
- [Release notes](https://github.com/ultrajson/ultrajson/releases)
- [Commits](ultrajson/ultrajson@5.12.0...5.12.1)

---
updated-dependencies:
- dependency-name: ujson
  dependency-version: 5.12.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -93,7 +93,7 @@ types-Deprecated==1.3.1.20260408
 types-python-dateutil==2.9.0.20260408
 types-pyyaml==6.0.12.20260408
 types-requests==2.33.0.20260503
-ujson==5.12.0
+ujson==5.12.1
 uritemplate==4.2.0
 uuid-utils==0.14.1
 watchdog==6.0.0