ci: upgrade node version

Author: sgratzl

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 20
       - run: npm i -g yarn
       - run: yarn config set checksumBehavior ignore
       - name: Cache Node.js modules

.github/workflows/deploy_website.yml

@@ -19,7 +19,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 20
           cache: npm
       - run: npm i -g yarn
       - run: yarn config set checksumBehavior ignore

.github/workflows/release_helper.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 20
       - name: Extract version
         id: extract_version
         run: |
@@ -54,7 +54,7 @@ jobs:
         uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 20
       - run: npm i -g yarn
       - run: yarn config set checksumBehavior ignore
       - name: Cache Node.js modules