chore: upgrade workflow node versions

Author: garzj

.github/workflows/lint-and-build.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18.x'
+          node-version: '20.x'
       - name: Install modules
         run: yarn
       - name: Run ESLint

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
       # Setup .npmrc file to publish to npm
       - uses: actions/setup-node@v3
         with:
-          node-version: '18.x'
+          node-version: '20.x'
           registry-url: 'https://registry.npmjs.org'
       - run: yarn
       - run: yarn build