[api] Masks sensitive env vars in debug print out

[frankfliu]

Description

Brief description of what this PR is about

• If this change is a backward incompatible change, why must this change be made?
• Interesting edge cases to note here

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.46%. Comparing base (bb5073f) to head (3f9380e).
Report is 1331 commits behind head on master.

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Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2657      +/-   ##
============================================
+ Coverage     72.08%   73.46%   +1.37%     
- Complexity     5126     6962    +1836     
============================================
  Files           473      685     +212     
  Lines         21970    30457    +8487     
  Branches       2351     3157     +806     
============================================
+ Hits          15838    22374    +6536     
- Misses         4925     6549    +1624     
- Partials       1207     1534     +327     

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