Require cemerick piggieback with correct namespace

[dpsutton]

copied code wasn't updated. this fixes the cemerick piggieback check

[codecov]

Codecov Report

Merging #523 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master     #523   +/-   ##
=======================================
  Coverage   74.88%   74.88%           
=======================================
  Files          33       33           
  Lines        2182     2182           
  Branches      130      130           
=======================================
  Hits         1634     1634           
  Misses        418      418           
  Partials      130      130

Impacted Files	Coverage Δ
src/cider/nrepl/middleware/util/cljs.clj	75.51% <0%> (ø)	⬆️

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