Update simplejson requirement from ==3.19.* to ==3.20.* in /requirements

Updates the requirements on [simplejson](https://github.com/simplejson/simplejson) to permit the latest version.
- [Release notes](https://github.com/simplejson/simplejson/releases)
- [Changelog](https://github.com/simplejson/simplejson/blob/master/CHANGES.txt)
- [Commits](simplejson/simplejson@v3.19.0...v3.20.1)

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

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

Author: dependabot[bot]

requirements/requirements.txt

@@ -8,7 +8,7 @@ python-dotenv==1.0.*
 tqdm>=4.66.3
 Pillow==11.1.*
 pathvalidate>=2.5.0
-simplejson==3.19.*
+simplejson==3.20.*
 ipython==8.18.*
 openvino>=2023.2.0
 openvino-model-api==0.2.5.1