fix: don't panic when the database connection cannot be established a…

[Reasno]

…t start up.

[codecov]

Codecov Report

Merging #77 (417af19) into master (50f46a0) will increase coverage by 0.03%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##           master      #77      +/-   ##
==========================================
+ Coverage   75.97%   76.01%   +0.03%     
==========================================
  Files          93       93              
  Lines        3297     3298       +1     
==========================================
+ Hits         2505     2507       +2     
  Misses        602      602              
+ Partials      190      189       -1     

Impacted Files	Coverage Δ
otgorm/dependency.go	87.15% <50.00%> (+1.97%)	⬆️
config/module.go	69.49% <100.00%> (ø)
kitkafka/transport.go	89.53% <0.00%> (-2.33%)	⬇️
otgorm/log.go	66.66% <0.00%> (+6.66%)	⬆️

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