ci: remove git credentials after checkout (brianc#2858)

Author: Fdawgs

.github/workflows/ci.yml

@@ -25,6 +25,8 @@ jobs:
     name: Node.js ${{ matrix.node }} (${{ matrix.os }})
     steps:
       - uses: actions/checkout@v3
+        with:
+          persist-credentials: false
       - name: Setup node
         uses: actions/setup-node@v3
         with: