Fix publish pricing CI job

[Kami]

Just trying to figure out why this job suddenly started failing on CI, it works fine locally (perhaps AWS blocked GHA IPs or similar?).

[codecov-commenter]

Codecov Report

Merging #1618 (155e6d6) into trunk (97f7005) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##            trunk    #1618   +/-   ##
=======================================
  Coverage   83.02%   83.02%           
=======================================
  Files         394      394           
  Lines       85269    85269           
  Branches     9070     9070           
=======================================
  Hits        70797    70797           
  Misses      11389    11389           
  Partials     3083     3083           

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[Kami]

Looks like the issue is related to using older version of demjson and 2to3 during setup phase not working anymore with new version of setuptools.

I'm trying to find a working alternative to demjson for parsing Javascript objects, it appears jsonnet may work.