[3.10] Default GHA permissions to contents: read (GH-148346) (#148391)

(cherry picked from commit 9c9df8a)

Author: hugovk

.github/workflows/build.yml

@@ -11,7 +11,8 @@ on:
     - 'main'
     - '3.*'
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}

.github/workflows/stale.yml

@@ -4,7 +4,8 @@ on:
   schedule:
   - cron: "0 0 * * *"
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   stale:

.github/workflows/verify-ensurepip-wheels.yml

@@ -13,7 +13,8 @@ on:
       - '.github/workflows/verify-ensurepip-wheels.yml'
       - 'Tools/scripts/verify_ensurepip_wheels.py'
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}

.github/workflows/verify-expat.yml

@@ -11,7 +11,8 @@ on:
       - 'Modules/expat/**'
       - '.github/workflows/verify-expat.yml'
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}