feat!: Dropped support for Node.js 16

[bizob2828]

Description

Updated engines to >=18 and updated workflows to no longer run on 16

Related Issues

Closes #311

[jsumners-nr]

Maybe merge the one that drops all of these files first?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.83%. Comparing base (32c6e8b) to head (16f2d22).

Additional details and impacted files

@@            Coverage Diff             @@
##             next     #316      +/-   ##
==========================================
- Coverage   98.98%   94.83%   -4.16%     
==========================================
  Files           7        7              
  Lines         891      891              
==========================================
- Hits          882      845      -37     
- Misses          9       46      +37     

Flag	Coverage Δ
integration-tests-16.x	?
integration-tests-18.x	93.93% <ø> (ø)
integration-tests-20.x	93.93% <ø> (ø)
integration-tests-22.x	93.93% <ø> (ø)
unit-tests-16.x	?
unit-tests-18.x	?
unit-tests-20.x	59.70% <ø> (ø)
unit-tests-22.x	59.70% <ø> (ø)
versioned-tests-16.x	?
versioned-tests-18.x	?
versioned-tests-20.x	?
versioned-tests-22.x	?

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.