Update ninja-schema requirement from >=0.14.1 to >=0.14.3 (#171)

Updates the requirements on [ninja-schema](https://github.com/eadwinCode/ninja-schema) to permit the latest version.
- [Release notes](https://github.com/eadwinCode/ninja-schema/releases)
- [Commits](eadwinCode/ninja-schema@0.14.1...0.14.3)

---
updated-dependencies:
- dependency-name: ninja-schema
  dependency-version: 0.14.3
  dependency-type: direct:production
...

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Author: dependabot[bot]

requirements-tests.txt

@@ -2,7 +2,7 @@ click==8.1.8
 cryptography
 django-stubs
 freezegun
-ninja-schema>=0.14.1
+ninja-schema>=0.14.3
 pytest
 pytest-asyncio==0.24.0
 pytest-cov