Relax typing extensions required version

[MattToast]

Relaxes the required version typing_extensions to prevent the following error when pip installing via pip install -e /path/to/local/smarsim[dev,ml,mypy]

(venv) [drozt@hostname ss]$ pip install -e .[dev,ml,mypy]
# ... abridged ...
ERROR: Cannot install smartsim and smartsim[dev,ml,mypy]==0.6.0 because these package versions have conflicting dependencies.

The conflict is caused by:
    smartsim[dev,ml,mypy] 0.6.0 depends on typing-extensions>=4.9.0; extra == "mypy"
    black 24.1a1 depends on typing-extensions>=4.0.1; python_version < "3.11"
    onnx 1.14.1 depends on typing-extensions>=3.6.2.1
    tensorflow 2.13.1 depends on typing-extensions<4.6.0 and >=3.6.6

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f683521) 90.34% compared to head (903904b) 90.80%.
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #459      +/-   ##
===========================================
+ Coverage    90.34%   90.80%   +0.46%     
===========================================
  Files           60       60              
  Lines         3833     3830       -3     
===========================================
+ Hits          3463     3478      +15     
+ Misses         370      352      -18     

see 14 files with indirect coverage changes

[ankona]

LGTM!