ci: disable credential persistence in checkout steps

.github/workflows/CICD.yml

@@ -713,6 +713,8 @@ jobs:
           # - { os: windows-latest , features: windows, toolchain: stable-x86_64-pc-windows-gnu }
     steps:
     - uses: actions/checkout@v6
+      with:
+        persist-credentials: false
     - uses: taiki-e/install-action@v2
       with:
         tool: nextest,grcov@0.8.24

.github/workflows/audit.yml

@@ -10,6 +10,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
       - uses: rustsec/audit-check@v2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/documentation.yml

@@ -25,6 +25,8 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Install/setup prerequisites
         shell: bash

.github/workflows/manpage-lint.yml

@@ -33,6 +33,8 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Install prerequisites
         shell: bash