Switches to node 18 support as the primary platform (#39)

No code changes, mainly verifying that tests pass with node 18 and all the config reflects node 18.

Also removes node 14 as it is falling of LTS support.

.github/workflows/npm-publish.yml

@@ -10,7 +10,7 @@ jobs:
       # Setup .npmrc file to publish to npm
       - uses: actions/setup-node@v3
         with:
-          node-version: '16.x'
+          node-version: '18.x'
           registry-url: 'https://registry.npmjs.org'
       - run: npm ci
       - run: npm publish

.github/workflows/pull-request.yml

@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x, 18.x]
+        node-version: [16.x, 18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:

.nvmrc

@@ -1 +1 @@
-16
+18