Replace the deprecated SHA-1 algorithm for generating open-api token

[mghio]

What's the purpose of this PR

Replace the deprecated SHA-1 algorithm for generating open-api token.

Which issue(s) this PR fixes:

Fixes #4503

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• Update the CHANGES log.

[codecov-commenter]

Codecov Report

Merging #4504 (6d10847) into master (ec658b0) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #4504      +/-   ##
============================================
+ Coverage     53.45%   53.46%   +0.01%     
- Complexity     2701     2703       +2     
============================================
  Files           490      490              
  Lines         15344    15344              
  Branches       1596     1596              
============================================
+ Hits           8202     8204       +2     
  Misses         6584     6584              
+ Partials        558      556       -2     

Impacted Files	Coverage Δ
...mework/apollo/openapi/service/ConsumerService.java	58.46% <100.00%> (ø)
...gservice/service/AppNamespaceServiceWithCache.java	82.35% <0.00%> (+0.73%)	⬆️
...ervice/service/ReleaseMessageServiceWithCache.java	85.88% <0.00%> (+1.17%)	⬆️

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[nobodyiam]

LGTM