ci: improve GHA workflow files

Author: striezel

.github/workflows/audit.yml

@@ -11,7 +11,10 @@ jobs:
     runs-on: ubuntu-24.04
     name: Node.js package audit
     steps:
-      - uses: actions/checkout@v5
+      - name: Git checkout
+        uses: actions/checkout@v5
+        with:
+          persist-credentials: false
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:

.github/workflows/docker.yml

@@ -7,9 +7,11 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       # Checks-out the repository under $GITHUB_WORKSPACE.
-      - uses: actions/checkout@v5
+      - name: Git checkout
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
+          persist-credentials: false
       - name: Build Dockerfile
         run: docker build . -t plotly
       - name: Start Docker container

.github/workflows/node.js.yml

@@ -12,7 +12,10 @@ jobs:
         node-version: [20.x, 22.x, 24.x]
 
     steps:
-    - uses: actions/checkout@v5
+    - name: Git checkout
+      uses: actions/checkout@v5
+      with:
+          persist-credentials: false
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v6
       with: