deps(deps): update postgres docker tag to v16.6

[renovate]

This PR contains the following updates:

Package	Update	Change
postgres	minor	16.4-alpine -> 16.6-alpine

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.82%. Comparing base (69303aa) to head (64d2705).

Additional details and impacted files

@@            Coverage Diff             @@
##             develop      #46   +/-   ##
==========================================
  Coverage      32.82%   32.82%           
  Complexity       119      119           
==========================================
  Files             31       31           
  Lines            463      463           
==========================================
  Hits             152      152           
  Misses           311      311           

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