ci: bump actions/checkout

Author: Jocelyn Badgley (Twipped)

.github/workflows/npm-publish.yml

@@ -20,7 +20,7 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v3