feat(cli): aws-cdk bundle is now targeting node18

[mrgrain]

Editorial changes to the CLI readme to ensure this will end-up in the correct release notes.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.01%. Comparing base (73e5e36) to head (ba435f2).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #610      +/-   ##
==========================================
- Coverage   79.59%   79.01%   -0.58%     
==========================================
  Files          46       46              
  Lines        7085     7085              
  Branches      792      791       -1     
==========================================
- Hits         5639     5598      -41     
- Misses       1427     1468      +41     
  Partials       19       19              

Flag	Coverage Δ
suite.unit	79.01% <ø> (-0.58%)	⬇️

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