[chore] Prepare collector core release v0.56.0

[dmitryax]

Resolves #5716

[codecov]

Codecov Report

Merging #5723 (3ef1043) into main (389c047) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main    #5723   +/-   ##
=======================================
  Coverage   91.56%   91.56%           
=======================================
  Files         192      192           
  Lines       11411    11411           
=======================================
  Hits        10449    10449           
  Misses        768      768           
  Partials      194      194           

Impacted Files	Coverage Δ
cmd/builder/internal/builder/config.go	83.82% <ø> (ø)
cmd/otelcorecol/main.go	0.00% <0.00%> (ø)

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