use node 18 as default for workflows

Author: davidjgoss

.github/workflows/build.yaml

@@ -38,7 +38,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
       - run: npm install
       - run: npm run test-coverage
       - uses: coverallsapp/github-action@master
@@ -55,5 +55,5 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
       - run: npm audit --groups dependencies --audit-level high

.github/workflows/release-npm-latest.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '18'
           cache: 'npm'
           cache-dependency-path: package-lock.json
       - run: npm install-test

.github/workflows/release-npm-next.yaml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '18'
           cache: 'npm'
           cache-dependency-path: package-lock.json
       - run: npm install-test