Update Node version (#219)

## High Level Overview of Change

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Use node 18 and 20 and deprecate unmaintained node versions (14 and 16).

### Type of Change

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- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Refactor (non-breaking change that only restructures code)
- [ ] Tests (You added tests for code that already exists, or your new
feature included in this PR)
- [ ] Documentation Updates
- [ ] Release

Author: pdp2121

.github/workflows/node.js.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     services: