Convert danger CHANGELOG check to message level

[b-onc]

and include missing changelog entry for #945

[codecov]

Codecov Report

Merging #948 (a1f6af1) into main (c21e447) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #948      +/-   ##
==========================================
+ Coverage   89.16%   89.19%   +0.02%     
==========================================
  Files         203      203              
  Lines        8319     8335      +16     
==========================================
+ Hits         7418     7434      +16     
  Misses        901      901              

Flag	Coverage Δ
llc-tests	89.19% <100.00%> (+0.02%)	⬆️
llc-tests-ios12	89.19% <100.00%> (+0.02%)	⬆️

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Impacted Files	Coverage Δ
...trollers/ChannelController/ChannelController.swift	92.04% <100.00%> (+0.31%)	⬆️

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