Update postgres Docker tag to v16 - autoclosed

[renovate]

This PR contains the following updates:

Package	Update	Change
postgres	major	9.6 -> 16.4

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.60%. Comparing base (2982020) to head (120ceb4).
Report is 5 commits behind head on master.

❗ Current head 120ceb4 differs from pull request most recent head 6dbc418. Consider uploading reports for the commit 6dbc418 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##             master      #21      +/-   ##
============================================
+ Coverage     58.11%   58.60%   +0.48%     
+ Complexity      147      146       -1     
============================================
  Files            41       42       +1     
  Lines           702      686      -16     
  Branches         31       31              
============================================
- Hits            408      402       -6     
+ Misses          278      269       -9     
+ Partials         16       15       -1     

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