prevent backwards-incompatible python-json-logger 3.2.0

ImportError while loading conftest '/var/lib/jenkins/workspace/rt_workspace-merge-into-stac-api/tests/conftest.py'.
tests/conftest.py:20: in <module>
    from openeo_driver.backend import OpenEoBackendImplementation, UserDefinedProcesses
venv38/lib64/python3.8/site-packages/openeo_driver/backend.py:29: in <module>
    from openeo_driver.config import OpenEoBackendConfig, get_backend_config
venv38/lib64/python3.8/site-packages/openeo_driver/config/__init__.py:1: in <module>
    from openeo_driver.config.config import OpenEoBackendConfig, ConfigException
venv38/lib64/python3.8/site-packages/openeo_driver/config/config.py:8: in <module>
    from openeo_driver.server import build_backend_deploy_metadata
venv38/lib64/python3.8/site-packages/openeo_driver/server.py:11: in <module>
    from openeo_driver.util.logging import show_log_level
venv38/lib64/python3.8/site-packages/openeo_driver/util/logging.py:13: in <module>
    import pythonjsonlogger.jsonlogger
E   ModuleNotFoundError: No module named 'pythonjsonlogger.jsonlogger'

Author: bossie

setup.py

@@ -64,7 +64,7 @@
         "flask-cors",
         "pyproj>=2.1.0",
         "python-dateutil",
-        "python-json-logger>=2.0.0",
+        "python-json-logger~=2.0.0",
         "deprecated>=1.2.12",
         "importlib_resources; python_version<'3.10'",
         "attrs>=23.1.0",