refactor(article-comment): missing pin/unpin gq endpoint & test

[mydearxym]

No description provided.

[codecov]

Codecov Report

Merging #398 (dc001d4) into dev (cd519cf) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #398   +/-   ##
=======================================
  Coverage   87.60%   87.60%           
=======================================
  Files          63       63           
  Lines        1138     1138           
=======================================
  Hits          997      997           
  Misses        141      141           

Impacted Files	Coverage Δ
lib/groupher_server_web/resolvers/cms_resolver.ex	93.54% <ø> (ø)

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