chore(deps): update postgres docker tag to v16.15

[renovate]

This PR contains the following updates:

Package	Update	Change
postgres (source)	minor	16.1 → 16.15

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5555f30) to head (6bf7951).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #502   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          120       120           
  Lines         3219      3219           
  Branches       119       119           
=========================================
  Hits          3219      3219           

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