Bump version to 0.5.2

[Officeyutong]

This PR updated version of ckb-light-client-{bin, lib} and light-client-js to 0.5.2

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.80%. Comparing base (8da63f7) to head (ca8ff23).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #239   +/-   ##
========================================
  Coverage    71.80%   71.80%           
========================================
  Files           27       27           
  Lines         6942     6942           
========================================
  Hits          4985     4985           
  Misses        1957     1957           

Flag	Coverage Δ
unittests	71.80% <ø> (ø)

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