Upgrade to node 20 (#201)

.github/workflows/prerelease.yml

@@ -20,10 +20,10 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set up Node.js 18.x
+      - name: Set up Node.js 20.x
         uses: actions/setup-node@v3
         with:
-          node-version: 18.x
+          node-version: 20.x
           registry-url: 'https://registry.npmjs.org'
 
       - name: Install dependencies

.github/workflows/release.yml

@@ -21,10 +21,10 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set up Node.js 18.x
+      - name: Set up Node.js 20.x
         uses: actions/setup-node@v3
         with:
-          node-version: 18.x
+          node-version: 20.x
           registry-url: 'https://registry.npmjs.org'
 
       - name: Install dependencies

.github/workflows/test.yml

@@ -17,10 +17,10 @@ jobs:
       - name: Check out repo
         uses: actions/checkout@v3
 
-      - name: Set up Node.js 18.x
+      - name: Set up Node.js 20.x
         uses: actions/setup-node@v3
         with:
-          node-version: 18.x
+          node-version: 20.x
 
       - name: Install dependencies
         run: yarn install --frozen-lockfile

.nvmrc

@@ -1 +1 @@
-18
+20