chore(deps): update postgres docker tag to v15.4

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
postgres	minor	15.3-alpine -> 15.4-alpine

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[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (0784849) 65.29% compared to head (640c9df) 65.29%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #298 +/- ## ======================================= Coverage 65.29% 65.29% ======================================= Files 59 59 Lines 1896 1896 Branches 369 369 ======================================= Hits 1238 1238 Misses 555 555 Partials 103 103 ```

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