ci: adapt ci scripts

.github/workflows/ci.yaml

@@ -14,6 +14,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          persist-credentials: false
       - name: Use Node.js
         uses: actions/setup-node@v1
         with:
@@ -36,6 +38,8 @@ jobs:
     steps:
       - name: Check out Git repository
         uses: actions/checkout@v1
+        with:
+          persist-credentials: false
 
       - name: Install Node.js, NPM and Yarn
         uses: actions/setup-node@v1

.github/workflows/release.yml

@@ -17,6 +17,7 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: "12.x"
+          persist-credentials: false
       - run: npm install
       - run: npm test -- --coverage
       - run: bash <(curl -s https://codecov.io/bash)
@@ -33,6 +34,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+          persist-credentials: false
       - name: Setup Node.js
         uses: actions/setup-node@v1
         with: