Changed log level not to spam messages

[AndriiDiachuk]

Closes: #6565.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 41.19%. Comparing base (43ee3c5) to head (2abadd0).

Files with missing lines	Patch %	Lines
cmd/observer/node_builder/observer_builder.go	0.00%	1 Missing ⚠️
cmd/utils.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6621   +/-   ##
=======================================
  Coverage   41.19%   41.19%           
=======================================
  Files        2052     2052           
  Lines      182215   182215           
=======================================
+ Hits        75064    75065    +1     
+ Misses     100860   100858    -2     
- Partials     6291     6292    +1     

Flag	Coverage Δ
unittests	41.19% <0.00%> (+<0.01%)	⬆️

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[peterargue]

please also update the follower
https://github.com/onflow/flow-go/blob/master/follower/follower_builder.go#L464