fix(upload-files): handle JSONDecodeError (DEV-2907)

[jnussbaum]

No description provided.

[linear]

DEV-2907 upload-files: unhandled JSONDecodeError leads to crash

At the end of the process-files program, when the results from the different workers are collected, the following error happened:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/requests/models.py", line 971, in json
    return complexjson.loads(self.text, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python3.11/3.11.6/Frameworks/Python.framework/Versions/3.11/lib/python3.11/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python3.11/3.11.6/Frameworks/Python.framework/Versions/3.11/lib/python3.11/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python3.11/3.11.6/Frameworks/Python.framework/Versions/3.11/lib/python3.11/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/dsp-tools", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/cli.py", line 577, in main
    run(sys.argv[1:])
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/cli.py", line 610, in run
    success = _call_requested_action(parsed_arguments)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/cli.py", line 499, in _call_requested_action
    success = upload_files(
              ^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/fast_xmlupload/upload_files.py", line 409, in upload_files
    result = _upload_files_in_parallel(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/fast_xmlupload/upload_files.py", line 325, in _upload_files_in_parallel
    result.append(uploaded.result())
                  ^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python3.11/3.11.6/Frameworks/Python.framework/Versions/3.11/lib/python3.11/concurrent/futures/_base.py", line 449, in result
    return self.__get_result()
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python3.11/3.11.6/Frameworks/Python.framework/Versions/3.11/lib/python3.11/concurrent/futures/_base.py", line 401, in __get_result
    raise self._exception
  File "/usr/local/Cellar/python3.11/3.11.6/Frameworks/Python.framework/Versions/3.11/lib/python3.11/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/fast_xmlupload/upload_files.py", line 275, in _upload_file
    res = _upload_without_processing(
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/dsp_tools/fast_xmlupload/upload_files.py", line 226, in _upload_without_processing
    if response_upload.json().get("message") == "server.fs.mkdir() failed: File exists":
       ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/models.py", line 975, in json
    raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)