refactor(typescript): noImplicitAny for publisher test file

[praveenqlogic]

towards #313 (it's a good idea to open an issue first for discussion)

• Tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

[codecov]

Codecov Report

Merging #520 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #520   +/-   ##
=======================================
  Coverage   94.97%   94.97%           
=======================================
  Files          16       16           
  Lines         996      996           
  Branches       87       87           
=======================================
  Hits          946      946           
  Misses         42       42           
  Partials        8        8

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