update the standard from 14 to 17 to avoid compile error

[guanshaoheng]

I am trying to implement the Graph network built based on torch_geometric to my cpp code by libtorch.

Thus the torchscatter lib file is needed by the GCNConv jit.

While using the old version to compile the c++ torch extension lib, I met following error.

miniconda3/lib/python3.11/site-packages/torch/include/c10/util/MaybeOwned.h:142:54: error: expected '(' for function-style cast or type construction
  142 |       std::is_nothrow_move_assignable_v<borrow_type> &&

After changing the CMAKE_CXX_STANDARD from 14 to 17, the error solved.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.20%. Comparing base (140d3ad) to head (f69c797).
Report is 9 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #469      +/-   ##
==========================================
+ Coverage   97.23%   98.20%   +0.97%     
==========================================
  Files          10       10              
  Lines         217      223       +6     
==========================================
+ Hits          211      219       +8     
+ Misses          6        4       -2     

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