MAINT: Update dependencies

[hildjj]

Update dependencies, switching to a modern eslint
and neostandard from standard. Fixed all ensuing
(minor) lint issues.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.00%. Comparing base (519f55d) to head (ff71a64).
⚠️ Report is 4 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #105      +/-   ##
==========================================
+ Coverage   97.97%   98.00%   +0.02%     
==========================================
  Files           6        7       +1     
  Lines        2026     2054      +28     
  Branches        0        1       +1     
==========================================
+ Hits         1985     2013      +28     
  Misses         41       41              

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[hildjj]

I expect this PR to be controversial because of the breaking change to require node 18+.

[msimerson]

I expect this PR to be controversial

I don't. Deprecated / unsupported / vulnerable versions of node.js shouldn't be supported, and anyone using them has access to older versions.