fix: Validate database service configuration (backport #1993)

[mergify]

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This is an automatic backport of pull request #1993 done by [Mergify](https://mergify.com).

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.79%. Comparing base (610c955) to head (c69febf).

Files with missing lines	Patch %	Lines
press/press/doctype/server/server.py	66.66%	3 Missing ⚠️

❌ Your patch check has failed because the patch coverage (66.66%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3817   +/-   ##
=======================================
  Coverage   44.79%   44.79%           
=======================================
  Files         714      714           
  Lines       48531    48540    +9     
=======================================
+ Hits        21738    21744    +6     
- Misses      26793    26796    +3     

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