regression: fix regex error when sending multi-line code

[abhinavkrin]

Proposed changes (including videos or screenshots)

The issue was traced to the use of Unicode property escapes (\p{S} and \p{P}) in the Haskell grammar definition of highlight.js, as detailed in highlight.js#4013.
The issue only occurred in production, likely due to differences in how the build process handles regex.

So, I have rolled back to version 11.8.0 as hotfix, which resolves the issue.

Issue(s)

Steps to test or reproduce

Further comments

CORE-1005

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.46%. Comparing base (2c79559) to head (499eddb).
Report is 2 commits behind head on release-7.4.0.

Additional details and impacted files

@@              Coverage Diff               @@
##           release-7.4.0   #35347   +/-   ##
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  Coverage          59.46%   59.46%           
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  Files               2830     2830           
  Lines              68627    68627           
  Branches           15181    15181           
==============================================
  Hits               40808    40808           
  Misses             25149    25149           
  Partials            2670     2670           

Flag	Coverage Δ
unit	75.53% <ø> (ø)

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[ggazzo]

@abhinavkrin @MarcosSpessatto How do we make sure this doesn't happen again tomorrow when someone updates the minor dependencies?

any test that could prevent that?