Update version for Swoole 4.7.0

[huanghantao]

No description provided.

[codecov]

Codecov Report

Merging #4321 (4c6fc9f) into master (3f2e960) will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4321      +/-   ##
==========================================
+ Coverage   50.68%   50.74%   +0.06%     
==========================================
  Files          72       72              
  Lines       14516    14516              
==========================================
+ Hits         7357     7366       +9     
+ Misses       7159     7150       -9     

Impacted Files	Coverage Δ
src/coroutine/socket.cc	38.92% <0.00%> (+0.09%)	⬆️
src/protocol/base.cc	65.13% <0.00%> (+1.97%)	⬆️
src/os/async_thread.cc	70.17% <0.00%> (+2.19%)	⬆️

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