Remove dependency on truncate_html gem

[forkata]

Summary

This doesn't seem to be used anywhere and is a relic from a 2013
change¹.
Additionally, this can now be achieved purely using Rails built-in
helpers, as such

include ActionView::Helpers::SanitizeHelper
include ActionView::Helpers::TextHelper

sanitize("<div> hello world".truncate(10))
# => "<div> h...</div>"

Checklist

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Footnotes

1. https://github.com/spree/spree/pull/2518 ↩

[forkata]

@jarednorman can you retry the build here 🙏🏼 We identified a flaky test and working with @benjaminwil to fix it, but it is not related to these changes.

[jarednorman]

I don't have permission on CircleCI. ☹️

You'll have to amend your commit and re-push.

[kennyadsl]

Re-running specs, but a rebase is needed now.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.95%. Comparing base (6255e88) to head (833eaa0).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #387      +/-   ##
==========================================
- Coverage   95.98%   95.95%   -0.04%     
==========================================
  Files         207      206       -1     
  Lines        4880     4815      -65     
==========================================
- Hits         4684     4620      -64     
+ Misses        196      195       -1     

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[benjaminwil]

Rebased. 👍

[fthobe]

@jarednorman @kennyadsl also this one looks ready for merge, but I am unsure on the test. Could you give a look and merge if possible.