chore: set CI to use Node v20 (#504)

.github/actions/update-stars/action.yml

@@ -5,5 +5,5 @@ inputs:
     description: GitHub token for GraphQL calls
     required: false
 runs:
-  using: node16
+  using: node20
   main: 'main.js'

.github/workflows/lint.yml

@@ -8,14 +8,13 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: pnpm/action-setup@v2.2.4
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v2
         with:
           version: 8
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
-          node-version: '18.x'
-          registry-url: https://registry.npmjs.org/
+          node-version-file: .nvmrc
           cache: 'pnpm'
       - name: Install dependencies
         run: pnpm install

.github/workflows/update-stars.yml

@@ -9,14 +9,13 @@ jobs:
   update:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: pnpm/action-setup@v2.2.4
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v2
         with:
           version: 8
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
-          node-version: '18.x'
-          registry-url: https://registry.npmjs.org/
+          node-version-file: .nvmrc
           cache: 'pnpm'
       - name: Install dependencies
         run: pnpm install

.nvmrc

@@ -0,0 +1 @@
+20