[3.12] Default GHA permissions to contents: read (GH-148346) (#148388)

(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 }}-reusable

.github/workflows/lint.yml

@@ -2,7 +2,8 @@ name: Lint
 
 on: [push, pull_request, workflow_dispatch]
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   FORCE_COLOR: 1

.github/workflows/mypy.yml

@@ -12,7 +12,8 @@ on:
       - ".github/workflows/mypy.yml"
   workflow_dispatch:
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   PIP_DISABLE_PIP_VERSION_CHECK: 1

.github/workflows/new-bugs-announce-notifier.yml

@@ -5,7 +5,8 @@ on:
     types:
       - opened
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   notify-new-bugs-announce:

.github/workflows/require-pr-label.yml

@@ -4,7 +4,8 @@ on:
   pull_request:
     types: [opened, reopened, labeled, unlabeled, synchronize]
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   label:

.github/workflows/reusable-context.yml

@@ -33,7 +33,8 @@ on:  # yamllint disable-line rule:truthy
         description: Whether to run the CIFuzz job
         value: ${{ jobs.compute-changes.outputs.run-ci-fuzz }}  # bool
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   compute-changes:

.github/workflows/reusable-docs.yml

@@ -4,7 +4,8 @@ on:
   workflow_call:
   workflow_dispatch:
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}

.github/workflows/reusable-macos.yml

@@ -15,7 +15,8 @@ on:
         required: true
         type: string
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   FORCE_COLOR: 1

.github/workflows/reusable-tsan.yml

@@ -12,7 +12,8 @@ on:
         type: boolean
         default: false
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   FORCE_COLOR: 1

.github/workflows/reusable-ubuntu.yml

@@ -12,7 +12,8 @@ on:
         type: boolean
         default: false
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   FORCE_COLOR: 1