Update postgres:15 Docker digest to 86817d5

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
postgres	digest	3a1d35a -> 86817d5

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Configuration

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🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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[codecov[bot]]

Codecov Report

Merging #450 (0fb5080) into main (dea64a5) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #450   +/-   ##
=======================================
  Coverage   60.03%   60.03%           
=======================================
  Files          10       10           
  Lines         598      598           
=======================================
  Hits          359      359           
  Misses        169      169           
  Partials       70       70           

Flag	Coverage Δ
integrationtests	38.29% <ø> (ø)
unittests	27.42% <ø> (ø)

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