Add AdminUpdateUserAttributes and ListUsers to Cognito

[dmcg]

No description provided.

[daviddenton]

Thanks! Can we get something in the Fake as well? 😉

[codecov-commenter]

Codecov Report

Merging #311 (1c1091a) into master (2a7a378) will decrease coverage by 0.25%.
The diff coverage is 0.00%.

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@@             Coverage Diff              @@
##             master     #311      +/-   ##
============================================
- Coverage     71.35%   71.11%   -0.25%     
  Complexity     1389     1389              
============================================
  Files           740      742       +2     
  Lines          8749     8779      +30     
  Branches        644      645       +1     
============================================
  Hits           6243     6243              
- Misses         2141     2171      +30     
  Partials        365      365              

Files	Coverage Δ
...amazon/cognito/action/AdminUpdateUserAttributes.kt	0.00% <0.00%> (ø)
.../http4k/connect/amazon/cognito/action/ListUsers.kt	0.00% <0.00%> (ø)

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