feat(GitHubActions): Downgrade back to node 16 in npm-publish.yml to fix build

Author: htbkoo

.github/workflows/npm-publish.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
-          node-version: 20  # TODO: extract this to strategy.matrix, reference: https://github.com/orgs/community/discussions/26284#discussioncomment-3251198
+          node-version: 16  # TODO: extract this to strategy.matrix, reference: https://github.com/orgs/community/discussions/26284#discussioncomment-3251198
       - run: npm ci
       - run: npm test
 
@@ -25,7 +25,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
-          node-version: 20
+          node-version: 16
           registry-url: https://registry.npmjs.org/
       - run: npm ci
       - run: npm publish