build(deps): Update tests to use node 18 (#223)

Author: nickfloyd

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           cache: npm
       - run: npm ci
       - run: npm run lint
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           cache: npm
       - run: npm ci
       - run: npm run build