[ci] Explicitly declare permissions and limit credentials (#15324)

Authored by: bashonly

.github/workflows/quick-test.yml

@@ -1,15 +1,19 @@
 name: Quick Test
 on: [push, pull_request]
-permissions:
-  contents: read
+
+permissions: {}
 
 jobs:
   tests:
     name: Core Test
     if: "!contains(github.event.head_commit.message, 'ci skip all')"
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
+      with:
+        persist-credentials: false
     - name: Set up Python 3.10
       uses: actions/setup-python@v6
       with:
@@ -24,9 +28,13 @@ jobs:
   check:
     name: Code check
     if: "!contains(github.event.head_commit.message, 'ci skip all')"
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
+      with:
+        persist-credentials: false
     - uses: actions/setup-python@v6
       with:
         python-version: '3.10'