Switch testnet to Amoy

[ScruffyPants]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 37.99%. Comparing base (4a517cd) to head (45b24dd).
Report is 65 commits behind head on master.

Files	Patch %	Lines
session/pingpong/hermes_promise_settler.go	0.00%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6041      +/-   ##
==========================================
+ Coverage   37.90%   37.99%   +0.09%     
==========================================
  Files         371      371              
  Lines       20665    20715      +50     
==========================================
+ Hits         7833     7871      +38     
- Misses      12054    12061       +7     
- Partials      778      783       +5     

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