bump to node 20 (#13)

.github/workflows/ci.yml

@@ -22,10 +22,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Node 16
+      - name: Set up Node
         uses: actions/setup-node@v1
         with:
-          node-version: 16
+          node-version: 20.5.1
       - name: Install dependencies
         run: |
           npm i

.github/workflows/deploy.yml

@@ -24,4 +24,4 @@ jobs:
           install_command: yarn install
           build_command: yarn build
           build_directory: dist
-          node_version: 16
+          node_version: 20

.node-version

@@ -1 +1 @@
-14.18.2
+20.5.1

dev.md

@@ -1,6 +1,13 @@
 ## Build Setup
 
 ```shell
+# current versions are:
+# node 20.5.1
+# npm  9.8.0
+# yarn 1.22.21
+
+npm install -g yarn
+
 # install dependencies
 yarn install