Update simplejson to 3.11.1

[pyup-bot]

There's a new version of simplejson available.
You are currently using 3.10.0. I have updated it to 3.11.1

These links might come in handy: PyPI | Changelog | Repo

Changelog

3.11.1

• Fix issue with item_sort_key when speedups are available, and add
  auto-discovery to test suites to prevent similar regressions
  item_sort_key always uses itemgetter in 3.11 simplejson/simplejson#173

3.11.0

• docstring fix in JSONEncoder
  docstring fix in JSONEncoder: use_decimal defaults to True simplejson/simplejson#172
• Call PyObject_IsTrue() only once for the strict argument of scanner
  Call PyObject_IsTrue() only once for the strict argument of scanner. simplejson/simplejson#170
• Fix a crash with unencodable encoding in the encoder
  Fix a crash wish unencodable encoding in the encoder. simplejson/simplejson#171
• Remove unused imports
  Remove unused imports. simplejson/simplejson#162
• Remove remnants of Python 2.4 support
  Remove remnants of Python 2.4 support. simplejson/simplejson#168
• Fix argument checking errors in _speedups.c
  Fix argument checking errors in _speedups.c. simplejson/simplejson#169
• Remove the __init__ methods in extension classes
  Remove the __init__ methods in extension classes. simplejson/simplejson#166
• Fix typo in the doc for loads
  Typo in the doc for loads simplejson/simplejson#161
• Add Python 3.6 to testing matrix and PyPI metadata
  Update Python versions simplejson/simplejson#153
  Python 3.6 is out simplejson/simplejson#152

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[pyup-bot]

Closing this in favor of #307