Use pagerank_local_parallel rather than pagerank_local for better performance

[sighingnow]

What do these changes do?

• use pagerank_local_parallel rather than pagerank_local

[codecov-commenter]

Codecov Report

Merging #2945 (4584d32) into main (ae8d96c) will increase coverage by 0.66%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2945      +/-   ##
==========================================
+ Coverage   73.27%   73.94%   +0.66%     
==========================================
  Files          99       99              
  Lines       10631    10639       +8     
==========================================
+ Hits         7790     7867      +77     
+ Misses       2841     2772      -69     

Impacted Files	Coverage Δ
python/graphscope/tests/conftest.py	86.49% <100.00%> (-0.94%)	⬇️
python/graphscope/tests/unittest/test_app.py	96.70% <100.00%> (ø)

... and 13 files with indirect coverage changes

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