Project Metrics Infrastructure Improvements

[prudhvigodithi]

Description

1. Cluster Upgrade to 2.13
2. Nginx conf update.
3. Cluster master change instance type.
4. Change alarm Schedule.rate to every 15 mins.
5. CDK package upgrade to 2.146.0.

Issues Resolved

List any issues this PR will resolve, e.g. Closes [...].

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.69%. Comparing base (f302c84) to head (f9e76b0).

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #46   +/-   ##
=========================================
  Coverage     76.69%   76.69%           
  Complexity      179      179           
=========================================
  Files            52       52           
  Lines          1124     1124           
  Branches         49       49           
=========================================
  Hits            862      862           
  Misses          239      239           
  Partials         23       23           

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