Update version for Swoole 4.7.1

[huanghantao]

No description provided.

[codecov]

Codecov Report

Merging #4372 (41e1f90) into master (e64e5a3) will increase coverage by 0.01%.
The diff coverage is 84.61%.

@@            Coverage Diff             @@
##           master    #4372      +/-   ##
==========================================
+ Coverage   50.83%   50.84%   +0.01%     
==========================================
  Files          72       72              
  Lines       14528    14534       +6     
==========================================
+ Hits         7385     7390       +5     
- Misses       7143     7144       +1     

Impacted Files	Coverage Δ
src/server/master.cc	54.07% <71.42%> (+0.03%)	⬆️
src/core/base.cc	74.10% <100.00%> (+0.06%)	⬆️
src/network/dns.cc	88.38% <100.00%> (ø)
src/coroutine/socket.cc	38.78% <0.00%> (-0.10%)	⬇️
src/os/process_pool.cc	57.89% <0.00%> (+0.45%)	⬆️

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