SM-1138: Update node engine version requirement to: ^18.18.0

[coltonhurst]

Type of change

- [ ] Bug fix
- [ ] New feature development
- [x] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

The typescript-eslint dependency is now above version 7.0, and breaking changes are listed here. Our dependency upgrade PR is here. This PR updates the node.js engine version requirement to ^18.18.0.

Node caret ranges defined here.

Code changes

• package.json: Update the node.js engine version requirement to ^18.18.0

Before you submit

• Please add unit tests where it makes sense to do so (encouraged but not required)
• If this change requires a documentation update - notify the documentation team
• If this change has particular deployment requirements - notify the DevOps team
• Ensure that all UI additions follow WCAG AA requirements

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 26.41%. Comparing base (4c89156) to head (b487e72).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8390   +/-   ##
=======================================
  Coverage   26.41%   26.41%           
=======================================
  Files        2290     2290           
  Lines       67091    67091           
  Branches    12593    12593           
=======================================
  Hits        17719    17719           
  Misses      47990    47990           
  Partials     1382     1382           

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[Thomas-Avery]

LGTM