gh/actions: make all cloned repo read-only (#3436)

Author: IvanGoncharov

.github/workflows/ci.yml

@@ -9,6 +9,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2
@@ -37,6 +39,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Check if commit contains files that should be ignored
         run: |
@@ -54,6 +58,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2
@@ -76,6 +82,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2
@@ -96,6 +104,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2
@@ -115,6 +125,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2
@@ -144,6 +156,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js v${{ matrix.node_version_to_setup }}
         uses: actions/setup-node@v2
@@ -164,6 +178,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Deepen cloned repo
         env:
@@ -189,6 +205,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Deepen cloned repo
         env:
@@ -225,6 +243,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2
@@ -255,6 +275,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
+        with:
+          persist-credentials: false
 
       - name: Setup Node.js
         uses: actions/setup-node@v2