[stubsabot] Bump simplejson to 4.0.*

Release: https://pypi.org/pypi/simplejson/4.0.1
Homepage: https://github.com/simplejson/simplejson
Repository: https://github.com/simplejson/simplejson
Typeshed stubs: https://github.com/python/typeshed/tree/main/stubs/simplejson
Diff: simplejson/simplejson@v3.20.2...v4.0.1

Stubsabot analysis of the diff between the two releases:
 - 1 public Python file has been added: `tsan_stress_simplejson.py`.
 - 0 files included in typeshed's stubs have been deleted.
 - 4 files included in typeshed's stubs have been modified or renamed: `simplejson/__init__.py`, `simplejson/decoder.py`, `simplejson/encoder.py`, `simplejson/scanner.py`.
 - Total lines of Python code added: 1759.
 - Total lines of Python code deleted: 218.

If stubtest fails for this PR:
- Leave this PR open (as a reminder, and to prevent stubsabot from opening another PR)
- Fix stubtest failures in another PR, then close this PR

Note that you will need to close and re-open the PR in order to trigger CI

Author: stubsabot

stubs/simplejson/METADATA.toml

@@ -1,2 +1,2 @@
-version = "3.20.*"
+version = "4.0.*"
 upstream-repository = "https://github.com/simplejson/simplejson"