fix(postgres): reduce log level for invalid/NaN values to debug

[ssube]

No description provided.

[codecov]

Codecov Report

Merging #59 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master      #59   +/-   ##
=======================================
  Coverage   38.79%   38.79%           
=======================================
  Files           3        3           
  Lines         415      415           
=======================================
  Hits          161      161           
  Misses        246      246           
  Partials        8        8

Impacted Files	Coverage Δ
postgres/client.go	33.19% <0%> (ø)	⬆️

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