Use Handlebars templates from npm

[tvdeyen]

What is this pull request for?

Instead of the very outdated Ruby gem we use
the currentl npm package. Providing the same
precompilation like before.

Checklist

• I have followed Pull Request guidelines
• I have added a detailed description into each commit message

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.63%. Comparing base (fb04559) to head (cda0815).
Report is 105 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3044      +/-   ##
==========================================
- Coverage   96.63%   96.63%   -0.01%     
==========================================
  Files         236      236              
  Lines        6333     6332       -1     
==========================================
- Hits         6120     6119       -1     
  Misses        213      213              

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[alchemycms-bot]

💔 All backports failed

Status	Branch	Result
❌	7.4-stable	Backport failed because of merge conflicts

Manual backport

To create the backport manually run:

backport --pr 3044

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details

[tvdeyen]

💚 All backports created successfully

Status	Branch	Result
✅	7.4-stable

Questions ?

Please refer to the Backport tool documentation